QUANEX CORP
S-8 POS, 1999-10-15
STEEL WORKS, BLAST FURNACES & ROLLING MILLS (COKE OVENS)
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<PAGE>   1
    As filed with the Securities and Exchange Commission on October 15, 1999

                                                      Registration No. 333-22977

================================================================================


                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                -----------------

                         Post Effective Amendment No. 2
                                       to
                                    FORM S-8
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

                               QUANEX CORPORATION
             (Exact name of registrant as specified in its charter)

                Delaware                                         38-1872178
    (State or other jurisdiction of                           (I.R.S. Employer
     incorporation or organization)                         Identification No.)

    1900 West Loop South, Suite 1500                               77027
            Houston, Texas                                      (Zip Code)
(Address of Principal Executive Offices)

                            Piper Impact 401(k) Plan
                            (Full title of the plan)


                                TERRY M. MURPHY
                               QUANEX CORPORATION
                        1900 WEST LOOP SOUTH, SUITE 1500
                              HOUSTON, TEXAS 77027
                     (Name and address of agent for service)

                                 (713) 961-4600
          (Telephone number, including area code, of agent for service)

                                   Copies to:
                             HARVA R. DOCKERY, ESQ.
                           FULBRIGHT & JAWORSKI L.L.P.
                          2200 ROSS AVENUE, SUITE 2800
                            DALLAS, TEXAS 75201-9975
                                 (214) 855-8000


================================================================================




<PAGE>   2



                                     PART II

               INFORMATION REQUIRED IN THE REGISTRATION STATEMENT

ITEM 3.           Incorporation of Documents by Reference.

                  Quanex Corporation, a Delaware corporation (the "Company" or
"Registrant"), and the Piper Impact 401(k) Plan (the "Plan") incorporate by
reference, as applicable, in this Registration Statement the following
documents:

                           (a) The Registrant's original Registration Statement
                  on Form S-8, Reg. No. 333-22977, filed March 7, 1997, as
                  amended by Post-Effective Amendment No. 1 filed
                  February 2, 1999;

                           (b) The Registrant's Annual Report on Form 10-K for
                  the fiscal year ended October 31, 1998;

                           (c) The Registrant's Quarterly Reports on Form 10-Q
                  for the quarters ended January 31, 1999, April 30, 1999 and
                  July 31, 1999;

                           (d) The Plan's Annual Report on Form 11-K for the
                  fiscal year ended December 31, 1998;

                           (e) All other reports filed by the Registrant and the
                  Plan pursuant to Section 13(a) or 15(d) of the Securities
                  Exchange Act of 1934, as amended (the "Exchange Act"), since
                  October 31, 1998;

                           (f) The description of the Registrant's common stock,
                  $.50 par value (the "Common Stock"), contained in the
                  Prospectus dated January 12, 1981, included in the
                  Registrant's Registration Statement (Registration No. 2-70313)
                  and filed with the Securities and Exchange Commission pursuant
                  to Rule 424(b) of the Securities Act of 1933; and

                           (g) The description of the rights to purchase Series
                  A Junior Participating Preferred Stock (the "Rights") set
                  forth in the Amended and Restated Certificate of Designation,
                  Preferences and Rights, filed as Exhibit 1 to Amendment No.1
                  to the Registrant's Form 8-A dated April 28, 1989, as amended
                  by that certain Second Amended and Restated Rights Agreement
                  between the Registrant and American Stock Transfer Co., as
                  Rights Agent, filed as Exhibit 4.1 to the Registrant's Report
                  on Form 8-K filed April 16, 1999.

                  All documents subsequently filed by the Registrant pursuant to
Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act after the date of filing
of this Post Effective Amendment No. 2 to the Registration Statement on Form S-8
(this "Amendment No. 2") and before the filing of a post-effective amendment
which indicates that all securities offered have been sold or which deregisters
all securities then remaining unsold, are incorporated by reference in, and
constitute a part of, the Registration Statement from the date such documents
are filed.



                                        2

<PAGE>   3



                  The language in this Amendment No. 2 modifies and supersedes
the language in any previously filed document that is incorporated by reference
in this Registration Statement. The language in any document that is filed after
the date of filing of this Amendment No. 2 that is incorporated by reference in
this Registration Statement modifies and supersedes the language in this
Registration Statement. However, such language constitutes a part of this
Registration Statement only to the extent that it modifies and supersedes this
Registration Statement.

ITEM 4.           Description of Securities.

                  Not applicable.

ITEM 5.           Interests of Named Experts and Counsel.

                  Not applicable.

ITEM 6.           Indemnification of Directors and Officers.

                  Section 145 of the General Corporation Law of the State of
Delaware provides that a corporation has the power to indemnify a director,
officer, employee or agent of the corporation and certain other persons serving
at the request of the corporation in related capacities against amounts paid and
expenses incurred in connection with an action or proceeding to which he is, or
is threatened to be made, a party by reason of such position, if such person
shall have acted in good faith and in a manner he reasonably believed to be in
or not opposed to the best interests of the corporation, and, in any criminal
proceeding, if such person had no reasonable cause to believe his conduct was
unlawful; provided that, in the case of actions brought by or in the right of
the corporation, no indemnification shall be made with respect to any matter as
to which such person shall have been adjudged to be liable to the corporation
unless and only to the extent that the adjudicating court determines that such
indemnification is proper under the circumstances.

                  The Registrant's Restated Certificate of Incorporation
eliminates the personal monetary liability of a director to the Registrant and
its stockholders for breach of his fiduciary duty of care as a director to the
extent currently allowed under the Delaware General Corporation Law. Article
XVII of the Registrant's Restated Certificate of Incorporation provides that a
director of the Registrant shall not be personally liable to the Registrant or
its stockholders for monetary damages for breach of fiduciary duty as a
director, except for liability (i) for any breach of the director's duty of
loyalty to the Registrant or its stockholders, (ii) for acts or omissions not in
good faith or which involve intentional misconduct or a knowing violation of
law, (iii) based on the payment of an improper dividend or an improper
repurchase of the Registrant's stock under Section 174 of the General
Corporation Law of the State of Delaware, or (iv) for any transaction from which
the director derived an improper personal benefit.


                                        3

<PAGE>   4



                  The Amended and Restated Bylaws of the Registrant provide
that, under certain circumstances, the Registrant is required to indemnify any
person who was, is, or is threatened to be made a party in any action, suit or
proceeding because such person is or was a director or officer of the
Registrant. The Registrant's Amended and Restated Bylaws were amended in
February 1987 to provide for indemnification by the Registrant of its officers
and directors to the fullest extent authorized by the General Corporation Law of
the State of Delaware. This right to indemnification under the Registrant's
Amended and Restated Bylaws is a contract right, and requires the Registrant to
provide for the payment of expenses in advance of the final disposition of any
suit or proceeding brought against the director or officer of the Registrant in
his official capacity as such, provided that such director or officer delivers
to the Registrant an undertaking to repay any amounts advanced if it is
ultimately determined that such director or officer is not entitled to
indemnification. The Registrant also maintains a directors' and officers'
liability insurance policy.

                  Insofar as indemnification for liabilities arising under the
Securities Act may be permitted to directors, officers or persons controlling
the Registrant pursuant to the foregoing provisions, or otherwise, the
Registrant has been informed that in the opinion of the Commission, such
indemnification is against public policy as expressed in the Securities Act and
is, therefore, unenforceable.

ITEM 7.           Exemption from Registration Claimed.

                  Not applicable.

ITEM 8.           Exhibits.

         4.1      Restated Certificate of Incorporation of the Registrant, as
                  amended on February 27, 1997, filed as Exhibit 4.1 to the
                  Registrant's Registration Statement on Form S-8, Registration
                  No. 333-22977, and incorporated herein by reference.

         4.2      Amended and Restated Bylaws of the Registrant, as amended
                  through August 26, 1999, filed as Exhibit 3 to the
                  Registrant's Quarterly Report on Form 10-Q for the quarter
                  ended July 31, 1999, and incorporated herein by reference.

         4.3      Form of Registrant's Common Stock certificate, filed as
                  Exhibit 4.1 to the Registrant's Quarterly Report on Form 10-Q
                  for the quarter ended April 30, 1987, and incorporated herein
                  by reference.

         4.4      Second Amended and Restated Rights Agreement between the
                  Registrant and American Stock Transfer Co., as Rights
                  Agent, filed as Exhibit 4.1 to the Registrant's Report
                  on Form 8-K filed April 16, 1999, and incorporated herein
                  by reference.

                                        4

<PAGE>   5


         4.5      Amended and Restated Certificate of Designation, Preferences
                  and Rights of the Registrant's Series A Junior Participating
                  Preferred Stock, filed as Exhibit 1 to Amendment No. 1 to the
                  Registrant's Form 8-A dated April 28, 1989, and incorporated
                  herein by reference.

         4.6      Piper Impact 401(k) Plan, as amended and restated effective
                  January 1, 1995.

         4.7      First Amendment to the Piper Impact 401(k) Plan, effective
                  January 1, 1999.

         4.8      Master Trust Agreement between the Registrant and Fidelity
                  Management Trust Company dated as of February 1, 1999.

         4.9      First Amendment to Trust Agreement between Fidelity Management
                  Trust Company and the Registrant, effective as of
                  November 1, 1999.

         23.1     Consent of Deloitte & Touche LLP.

         24.1     Powers of Attorney.

                  The Registrant hereby undertakes to submit the Plan, and any
amendments thereto, to the Internal Revenue Service ("IRS") in a timely manner
and will make all changes required by the IRS in order to qualify the Plan.

ITEM 9.           Undertakings.

                  A.       The undersigned Registrant hereby undertakes:

                           (1) To file, during any period in which offers or
                  sales are being made, a post-effective amendment to this
                  Registration Statement:

                                    (i) To include any prospectus required by
                           Section 10(a)(3) of the Securities Act of 1993, as
                           amended (the "Securities Act");

                                    (ii) To reflect in the prospectus any facts
                           or events arising after the effective date of this
                           Registration Statement (or the most recent
                           post-effective amendment hereof) which, individually
                           or in the aggregate, represent a fundamental change
                           in the information set forth in this Registration
                           Statement. Notwithstanding the foregoing, any
                           increase or decrease in volume of securities offered
                           (if the total dollar volume of securities offered
                           would not exceed that which was registered) and any


                                        5

<PAGE>   6


                           deviation from the high or low end of the estimated
                           maximum offering range may be reflected in the form
                           of prospectus filed with the Securities and Exchange
                           Commission pursuant to Rule 424(b) if, in the
                           aggregate, the changes in volume and price represent
                           no more than a 20% change in the maximum aggregate
                           offering price set forth in the "Calculation of
                           Registration Fee" table in the effective registration
                           statement; and

                                    (iii) To include any material information
                           with respect to the plan of distribution not
                           previously disclosed in this Registration Statement
                           or any material change to such information in this
                           Registration Statement;

                           Provided, however, that paragraphs (i) and (ii) do
                  not apply if the information required to be included in a
                  post-effective amendment by those paragraphs is contained in
                  periodic reports filed by the Registrant pursuant to Section
                  13 or 15(d) of the Exchange Act that are incorporated by
                  reference in this Registration Statement.

                           (2) That, for the purpose of determining any
                  liability under the Securities Act, each such post-effective
                  amendment shall be deemed to be a new registration statement
                  relating to the securities offered herein, and the offering of
                  such securities at that time shall be deemed to be the initial
                  bona fide offering thereof.

                           (3) To remove from registration by means of a
                  post-effective amendment any of the securities being
                  registered which remain unsold at the termination of the
                  offering.

                  B. The undersigned Registrant hereby undertakes that, for the
purposes of determining any liability under the Securities Act, each filing of
the Registrant's annual report pursuant to Section 13(a) or Section 15(d) of the
Exchange Act (and, where applicable, each filing of an employee benefit plan's
annual report pursuant to Section 15(d) of the Exchange Act) that is
incorporated by reference into this Registration Statement shall be deemed to be
a new registration statement relating to the securities offered herein, and the
offering of such securities at that time shall be deemed to be the initial bona
fide offering thereof.

                  C. Insofar as indemnification for liabilities arising under
the Securities Act may be permitted to directors, officers, and controlling
persons of the Registrant pursuant to the foregoing provisions, or otherwise,
the Registrant has been advised that in the opinion of the Securities and
Exchange Commission such indemnification is against public policy as expressed
in the Securities Act and is, therefore, unenforceable. In the event that a
claim for indemnification against such liabilities (other than the payment by
the Registrant of expenses incurred or paid by a


                                        6

<PAGE>   7


director, officer or controlling person of the Registrant in the successful
defense of any action, suit or proceeding) is asserted by such director, officer
or controlling person in connection with the securities being registered, the
Registrant will, unless in the opinion of its counsel the matter has been
settled by controlling precedent, submit to a court of appropriate jurisdiction
the question of whether such indemnification by it is against public policy as
expressed in the Securities Act and will be governed by the final adjudication
of such issue.




                                        7

<PAGE>   8



                                   SIGNATURES

                  Pursuant to the requirements of the Securities Act of 1933,
the Registrant certifies that it has reasonable grounds to believe that it meets
all of the requirements for filing on Form S-8 and has duly caused this
Post-Effective Amendment No. 2 to Registration Statement to be signed on its
behalf by the undersigned, thereunto duly authorized, in the City of Houston,
State of Texas, on the 15th day of October, 1999.

                              QUANEX CORPORATION



                              By            /s/ Vernon E. Oechsle
                                 -----------------------------------------------
                                               Vernon E. Oechsle
                                 Director, President and Chief Executive Officer
                                          (Principal Executive Officer)


                  Pursuant to the requirements of the Securities Act of 1933,
this Post-Effective Amendment No. 2 to Registration Statement has been signed
below by the following persons in the capacities and on the dates indicated.


<TABLE>
<CAPTION>
                Signature                                       Title                                    Date
=========================================      =======================================     ================================

<S>                                            <C>                                         <C>
                                                       Director, President and
     /s/ Vernon E. Oschlse                             Chief Executive Officer                     October 15, 1999
- -----------------------------------------            (Principal Execute Officer)
            Vernon E. Oechsle

                                                    Executive Vice President and
       /s/ James H. Davis                              Chief Operating Officer                     October 15, 1999
- -----------------------------------------           (Principal Operating Officer)
             James H. Davis


                   *                                          Director                             October 15, 1999
- -----------------------------------------
          Donald G. Barger, Jr.
</TABLE>





                                        8

<PAGE>   9

<TABLE>
<S>                                            <C>                                         <C>
                    *                                         Director                             October 15, 1999
- -----------------------------------------
             Susan F. Davis


                    *                                         Director                             October 15, 1999
- -----------------------------------------
            Russell M. Flaum


                    *                                         Director                             October 15, 1999
- -----------------------------------------
            Carl E. Pfeiffer



                    *                                         Director                             October 15, 1999
- -----------------------------------------
            John D. O'Connell


                    *                                         Director                             October 15, 1999
- -----------------------------------------
           Vincent R. Scorsone


                    *                                         Director                             October 15, 1999
- -----------------------------------------
          Michael J. Sebastian
                                                        President, Engineered
                                                         Products Group and
          /s/ Terry M. Murphy                         Chief Financial Officer                      October 15, 1999
- -----------------------------------------           (Principal Financial Officer)
              Terry M. Murphy


         /s/ Viren M. Parikh                                 Controller                            October 15, 1999
- -----------------------------------------          (Principal Accounting Officer)
             Viren M. Parikh


*By      /s/ Viren M. Parikh
- -----------------------------------------
             Viren M. Parikh
                  Attorney-in-fact
</TABLE>




                                        9

<PAGE>   10



                  The Plan. Pursuant to the requirements of the Securities Act
of 1933, the Administrative Committee of the Plan has duly caused this
Post-Effective Amendment No. 2 to Registration Statement on Form S-8 to be
signed on its behalf by the undersigned members of such committee, thereunto
duly authorized, in the City of Houston, State of Texas, on October 15, 1999.

                                   PIPER IMPACT 401(K) PLAN



                                   By :        /s/ Vernon E. Oechsle
                                       -----------------------------------------
                                                               Vernon E. Oechsle


                                   By :        /s/ James H. Davis
                                       -----------------------------------------
                                                               James H. Davis


                                   By :        /s/ Wayne M. Rose
                                       -----------------------------------------
                                                               Wayne M. Rose


                                   By :        /s/ Terry M. Murphy
                                       -----------------------------------------
                                                               Terry M. Murphy


                                   By :        /s/ Paul J. Giddens
                                       -----------------------------------------
                                                               Paul J. Giddens


                                   By :        /s/ Viren M. Parikh
                                       -----------------------------------------
                                                               Viren M. Parikh




                                       10

<PAGE>   11


                                  EXHIBIT INDEX


 <TABLE>
 <CAPTION>
 Exhibit
 Number           Description
 ------           -----------

  <S>             <C>

   4.1            Restated Certificate of Incorporation of the Registrant, as
                  amended on February 27, 1997, filed as Exhibit 4.1 to the
                  Registrant's Registration Statement on Form S-8, Registration
                  No. 333-22977, and incorporated herein by reference.

   4.2            Amended and Restated Bylaws of the Registrant, as amended
                  through August 26, 1999, filed as Exhibit 3 to the
                  Registrant's Quarterly Report on Form 10-Q for the quarter
                  ended July 31, 1999, and incorporated herein by reference.

   4.3            Form of Registrant's Common Stock certificate, filed as
                  Exhibit 4.1 to the Registrant's Quarterly Report on Form 10-Q
                  for the quarter ended April 30, 1987, and incorporated herein
                  by reference.

   4.4            Second Amended and Restated Rights Agreement between the
                  Registrant and American Stock Transfer Co., as Rights
                  Agent, filed as Exhibit 4.1 to the Registrant's Report
                  on Form 8-K filed April 16, 1999, and incorporated herein
                  by reference.

   4.5            Amended and Restated Certificate of Designation, Preferences
                  and Rights of the Registrant's Series A Junior Participating
                  Preferred Stock, filed as Exhibit 1 to Amendment No. 1 to the
                  Registrant's Form 8-A dated April 28, 1989, and incorporated
                  herein by reference.

   4.6            Piper Impact 401(k) Plan, as amended and restated effective
                  January 1, 1995.

   4.7            First Amendment to the Piper Impact 401(k) Plan, effective
                  January 1, 1999.

   4.8            Master Trust Agreement between the Registrant and Fidelity
                  Management Trust Company dated as of February 1, 1999.

   4.9            First Amendment to Trust Agreement between Fidelity Management
                  Trust Company and the Registrant, effective as of
                  November 1, 1999.

   23.1           Consent of Deloitte & Touche LLP.

   24.1           Powers of Attorney.


</TABLE>


<PAGE>   1

                                                                     EXHIBIT 4.6


                                  PIPER IMPACT
                                   401(k) PLAN



<PAGE>   2



                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                              SECTION
<S>      <C>                                                                                                  <C>
ARTICLE I - DEFINITIONS

         Account...............................................................................................1.01
         Active Service........................................................................................1.02
         Affiliated Employer...................................................................................1.03
         Annual Compensation...................................................................................1.04
         Annuity Starting Date.................................................................................1.05
         Beneficiary" or "Beneficiaries........................................................................1.06
         Board of Directors....................................................................................1.07
         Code..................................................................................................1.08
         Committee.............................................................................................1.09
         Considered Compensation...............................................................................1.10
         Contribution..........................................................................................1.11
         Direct Rollover.......................................................................................1.12
         Disability............................................................................................1.13
         Distributee...........................................................................................1.14
         Eligible Retirement Plan..............................................................................1.15
         Eligible Rollover Distribution........................................................................1.16
         Employee..............................................................................................1.17
         Employer or Employers.................................................................................1.18
         ERISA.................................................................................................1.19
         Excess Deferral.......................................................................................1.20
         Five Percent Owner....................................................................................1.21
         Highly Compensated Employee...........................................................................1.22
         Hour of Service.......................................................................................1.23
         Leased Employee.......................................................................................1.24
         Matched Salary Deferral Contribution..................................................................1.25
         Member................................................................................................1.26
         Non-Highly Compensated Employee.......................................................................1.27
         Period of Service.....................................................................................1.28
         Period of Severance...................................................................................1.29
         Plan..................................................................................................1.30
         Plan Year.............................................................................................1.31
         Qualified Domestic Relations Order....................................................................1.32
         QJSA..................................................................................................1.33
         QPSA..................................................................................................1.34
         Regulation............................................................................................1.35
         Required Beginning Date...............................................................................1.36
         Retirement Age........................................................................................1.37
         Rollover Contribution.................................................................................1.38
         Separation From Service...............................................................................1.39
</TABLE>


                                       -i-

<PAGE>   3

<TABLE>
<S>      <C>                                                                                                  <C>
         Service...............................................................................................1.40
         Severs Service........................................................................................1.41
         Sponsor...............................................................................................1.42
         Sponsor Stock.........................................................................................1.43
         Spouse................................................................................................1.44
         Transferred...........................................................................................1.45
         Trust.................................................................................................1.46
         Trustee...............................................................................................1.47
         Trust Fund............................................................................................1.48
         Valuation Date........................................................................................1.49

ARTICLE II - ACTIVE SERVICE

         When Active Service Begins............................................................................2.01
         Aggregation of Service................................................................................2.02
         Periods of Service of Less Than One Year..............................................................2.03
         Service Prior to Severance............................................................................2.04
         Periods of Severance Due to Child Birth or Adoption...................................................2.05
         Transfers.............................................................................................2.06
         Employment Records Conclusive.........................................................................2.07
         Service Credit Required under Federal Law.............................................................2.08
         Special Transitional Rule.............................................................................2.09
         Credit for Service With Piper Impact, Inc. a Tennessee Corporation....................................2.10

ARTICLE III - ELIGIBILITY

         Eligibility Requirements..............................................................................3.01
         Eligibility Upon Reemployment.........................................................................3.02
         Cessation of Participation............................................................................3.03
         Recommencement of Participation.......................................................................3.04

ARTICLE IV - CONTRIBUTIONS

         Salary Deferral Contributions.........................................................................4.01
         Employer Matching Contributions.......................................................................4.02
         Supplemental Contributions............................................................................4.03
         Rollover Contributions and Plan-to-Plan Transfers.....................................................4.04
         Qualified Nonelective Employer Contributions..........................................................4.05
         Restoration Contributions.............................................................................4.06
         Nondeductible Contributions Not Required..............................................................4.07
         Form of Payment of Contributions......................................................................4.08
         Deadline for Payment of Employer Contributions........................................................4.09
         Return of Contributions for Mistake, Disqualification or Disallowance
                  of Deduction.................................................................................4.10
</TABLE>


                                      -ii-

<PAGE>   4



<TABLE>
<S>      <C>                                                                                                   <C>
ARTICLE V - ALLOCATION AND VALUATION OF ACCOUNTS

         Information Statements from Employer..................................................................5.01
         Allocation of Salary Deferral Contribution............................................................5.02
         Allocation of Matching Employer Contribution..........................................................5.03
         Allocation of Supplemental Contribution...............................................................5.04
         Allocation of Qualified Nonelective Employer Contribution.............................................5.05
         Allocation of Dividends on Sponsor Stock..............................................................5.06
         Sponsor Stock Splits..................................................................................5.07
         Valuation of Accounts.................................................................................5.08
         Allocation of Forfeitures.............................................................................5.09
         Restoration of Forfeited Amounts......................................................................5.10
         No Vesting Unless Otherwise Prescribed................................................................5.11

ARTICLE VI - BENEFITS

         Valuation of Accounts for Withdrawals and Distributions...............................................6.01
         Death Benefit.........................................................................................6.02
         Retirement Benefit....................................................................................6.03
         Disability Benefit....................................................................................6.04
         Severance Benefit.....................................................................................6.05
         Distributions Pursuant to Qualified Domestic Relations Orders.........................................6.06
         Financial Hardship Distributions......................................................................6.07
         Age 59 1/2 Distributions..............................................................................6.08
         Loans.................................................................................................6.09
         Forfeiture by Lost Members or Beneficiaries...........................................................6.10
         Forfeiture on Termination of Participation............................................................6.11
         Claims Procedure......................................................................................6.12
         Normal Form of Distributions..........................................................................6.13
         Direct Rollover Option................................................................................6.14
         Choice of Distribution Methods........................................................................6.15
         Single Sum Payments of Small Amounts Upon Separation From Service.....................................6.16
         Consent to Distributions Upon Separation From Service.................................................6.17
         Qualified Joint and Survivor Annuity Requirements.....................................................6.18
         Qualified Preretirement Survivor Annuity Requirements.................................................6.19
         Information Provided to Members.......................................................................6.20
         Optional Forms of Distributions.......................................................................6.21
         Time of Distributions.................................................................................6.22
         Designation of Beneficiary............................................................................6.23
         Distributions to Disabled Persons.....................................................................6.24

ARTICLE VII - ADMINISTRATION OF THE PLAN

         Appointment, Term of Service & Removal................................................................7.01
</TABLE>


                                      -iii-

<PAGE>   5

<TABLE>
<S>      <C>                                                                                                   <C>
         Powers................................................................................................7.02
         Organization..........................................................................................7.03
         Quorum and Majority Action............................................................................7.04
         Signatures............................................................................................7.05
         Disqualification of Committee Member..................................................................7.06
         Disclosure to Members.................................................................................7.07
         Liability of Committee and Liability Insurance........................................................7.08
         Exemption from Bond...................................................................................7.09
         Compensation..........................................................................................7.10
         Persons Serving in Dual Fiduciary Roles...............................................................7.11
         Administrator.........................................................................................7.12

ARTICLE VIII - TRUST FUND AND CONTRIBUTIONS

         Funding of Plan.......................................................................................8.01
         Incorporation of Trust................................................................................8.02
         Authority of Trustee..................................................................................8.03
         Allocation of Responsibility..........................................................................8.04

ARTICLE IX - ADOPTION OF PLAN BY OTHER EMPLOYERS

         Adoption Procedure....................................................................................9.01
         No Joint Venture Implied..............................................................................9.02
         All Trust Assets Available to Pay All Benefits........................................................9.03
         Qualification a Condition Precedent to Adoption and Continued Participation...........................9.04

ARTICLE X - AMENDMENT AND TERMINATION

         Right to Amend and Limitations Thereon...............................................................10.01
         Mandatory Amendments.................................................................................10.02
         Withdrawal of Employer...............................................................................10.03
         Termination of Plan..................................................................................10.04
         Partial or Complete Termination or Complete Discontinuance of Contributions..........................10.05
         Continuance Permitted Upon Sale or Transfer of Assets................................................10.06

ARTICLE XI - MISCELLANEOUS

         Plan Not an Employment Contract......................................................................11.01
         Benefits Provided Solely From Trust..................................................................11.02
         Assignments Prohibited...............................................................................11.03
         Requirements Upon Merger or Consideration of Plans...................................................11.04
         Gender of Words Used.................................................................................11.05
         Severability.........................................................................................11.06
         Reemployed Veterans..................................................................................11.08
         Governing Law........................................................................................11.09
</TABLE>


                                      -iv-

<PAGE>   6



         APPENDIX A - LIMITATIONS ON CONTRIBUTIONS

         APPENDIX B - TOP-HEAVY REQUIREMENTS

         APPENDIX C - OPTIONAL FORMS OF DISTRIBUTIONS


                                       -v-

<PAGE>   7



                                  PIPER IMPACT
                                   401(k) PLAN

         THIS AGREEMENT adopted by Piper Impact, Inc., a Delaware corporation
(the "Sponsor"),

                              W I T N E S S E T H:

         WHEREAS, effective January 1, 1995, Piper Impact, Inc., a Tennessee
corporation (the "Prior Employer") established the Piper Impact 401(k) Plan (the
"Plan") which is intended to be a profit sharing plan that satisfies the
requirements of sections 401(a) and 401(k) of the Internal Revenue Code of 1986,
as amended; and

         WHEREAS, effective as of March 29, 1996, the Sponsor purchased
substantially all of the assets of the Prior Employer;

         WHEREAS, on August 9, 1996, the Sponsor assumed sponsorship of the Plan
and the Prior Employer terminated its participation in the Plan; and

         WHEREAS, the Sponsor desires to amend and restate the Plan;

         NOW, THEREFORE, the Plan is hereby amended and restated in its entirety
as set forth below.


<PAGE>   8


                                    ARTICLE I

                                   DEFINITIONS

         The words and phrases defined in this Article shall have the meaning
set out in the definition unless the context in which the word or phrase appears
reasonably requires a broader, narrower or different meaning.

         1.01 "ACCOUNT" means all ledger accounts pertaining to a Member which
are maintained by the Committee to reflect the Member's interest in the Trust
Fund. The Committee shall establish the following Accounts and any additional
Accounts that the Committee considers necessary to reflect the entire interest
of the Member in the Trust Fund. Each of the Accounts listed below and any
additional Accounts established by the Committee shall reflect the Contributions
or amounts transferred to the Trust Fund, if any, and the appreciation or
depreciation of the assets in the Trust Fund and the income earned or loss
incurred on the assets in the Trust Fund attributable to the Contributions
and/or other amounts transferred to the Account.

                  (a) Salary Deferral Contribution Account -- the Member's
         before-tax contributions.

                  (b) Matching Employer Contribution Account -- the Employer's
         matching contributions.

                  (c) Supplemental Contribution Account -- the Employer's
         discretionary contributions, if any, made pursuant to Section 4.03.

                  (d) Qualified Nonelective Employer Contribution Account -- the
         Employer's contributions made as a means of passing the actual deferral
         percentage test of section 401(k) of the Code or the actual
         contribution percentage test of section 401(m) of the Code.

                  (e) Rollover Account -- funds transferred from another
         qualified plan or individual retirement account for the benefit of a
         Member.

         1.02 "ACTIVE SERVICE" means the Periods of Service which are counted
for either eligibility or vesting purposes as calculated under Article II.

         1.03 "AFFILIATED EMPLOYER" means the Employer and any employer which is
a member of the same controlled group of corporations within the meaning of
section 414(b) of the Code or which is a trade or business (whether or not
incorporated) which is under common control (within the meaning of section
414(c) of the Code), which is a member of an affiliated service group (within
the meaning of section 414(m) of the Code) with the Employer, or which is
required to be aggregated with the Employer under section 414(o) of the Code.
For purposes of the limitation on allocations contained in Appendix A, the
definition of Affiliated Employer is modified by substituting the phrase "more
than 50 percent" in place of the phrase "at least 80 percent" each place the
latter phrase appears in section 1563(a)(1) of the Code.


                                      I-1
<PAGE>   9


         1.04 "ANNUAL COMPENSATION" means the Employee's wages from the
Affiliated Employers as defined in section 3401(a) of the Code for purposes of
federal income tax withholding at the source (but determined without regard to
any rules that limit the remuneration included in wages based on the nature or
location of the employment or the services performed) modified by including
elective contributions under a cafeteria plan described in section 125 of the
Code and elective contributions to any plan qualified under section 401(k),
408(k), or 403(b) of the Code. However, for purposes of Appendix A of the Plan,
effective for Limitation Years beginning before January 1, 1998, "Annual
Compensation" does not include any salary deferral contributions to plan
qualified under section 401(k) of the Code or any amount that is deferred at the
election of the Employee and is not includable in the gross income of the
Employee by reason of section 125 of the Code. Except for purposes of Section
1.1 of Appendix A of the Plan, Annual Compensation in excess of $150,000.00 (as
adjusted by the Secretary of Treasury) shall be disregarded. If the Plan Year is
ever less than twelve months, the $150,000.00 limitation (as adjusted by the
Secretary of Treasury) will be prorated by multiplying the limitation by a
fraction, the numerator of which is the number of months in the Plan Year, and
the denominator of which is 12.

         1.05 "ANNUITY STARTING DATE" means the first day of the first period
for which an amount is payable as an annuity, or in the case of a benefit
payable in the form of a lump sum, the date on which the Trustee disburses the
lump sum.

         1.06 "BENEFICIARY" OR "BENEFICIARIES" means the person or persons, or
the trust or trusts created for the benefit of a natural person or persons or
the Member's or former Member's estate, designated by the Member or former
Member to receive the benefits payable under the Plan upon his death.

         1.07 "BOARD OF DIRECTORS" means the board of directors, the executive
committee or other body given management responsibility for the Sponsor.

         1.08 "CODE" means the Internal Revenue Code of 1986, as amended from
time to time.

         1.09 "COMMITTEE" means the committee appointed by the Sponsor to
administer the Plan.

         1.10 "CONSIDERED COMPENSATION" means as to each Employee, that
Employee's Annual Compensation modified by including elective contributions
under a cafeteria plan described in section 125 of the Code and elective
contributions to any plan qualified under section 401(k), 408(k) or 403(b) of
the Code, and modified further by excluding the following items (even if
includable in gross income), reimbursements or other expense allowances, fringe
benefits (cash and noncash), moving expenses, deferred compensation, overtime
wages, and welfare benefits. Considered Compensation in excess of $150,000.00
(as adjusted by the Secretary of Treasury) shall be disregarded. If the Plan
Year is ever less than twelve months, the $150,000.00 limitation (as adjusted by
the Secretary of Treasury) will be prorated by multiplying the limitation by a
fraction, the numerator of which is the number of months in the Plan Year, and
the denominator of which is 12.


                                      I-2
<PAGE>   10

         1.11 "CONTRIBUTION" means the total amount of contributions made under
the terms of the Plan. Each specific type of Contribution shall be designated by
the type of contribution made as follows:

                  (a) Salary Deferral Contribution -- contributions made by the
         Employer under the Employee's salary deferral agreement.

                  (b) Matching Employer Contribution -- matching contributions
         made by the Employer.

                  (c) Supplemental Contribution -- contributions made by the
         Employer on discretionary basis pursuant to Section 4.03.

                  (d) Qualified Nonelective Employer Contribution --
         contributions made by the Employer as a means of passing the actual
         deferral percentage test of section 401(k) of the code or the actual
         contribution percentage test of section 401(m) of the Code.

                  (e) Rollover Contribution - contributions made by a Member
         which consist of any part of an eligible rollover distribution (as
         defined in section 402 of the Code) from a qualified employee trust
         described in section 401(a) of the Code.

         1.12 "DIRECT ROLLOVER" means a payment by the Plan to the Eligible
Retirement Plan specified by the Distributee.

         1.13 "DISABILITY" means a mental or physical disability which, in the
opinion of a physician selected by the Committee, shall prevent the Member from
earning a reasonable livelihood with any Affiliated Employer and which can be
expected to result in death or which has lasted or can be expected to last for a
continuous period of not less than 12 months and which: (a) was not contracted,
suffered or incurred while the Member was engaged in, or did not result from
having engaged in, a felonious criminal enterprise; (b) did not result from
alcoholism or addiction to narcotics; and (c) did not result from an injury
incurred while a member of the Armed Forces of the United States for which the
Member receives a military pension.

         1.14 "DISTRIBUTEE" means an Employee or former Employee. In addition,
the Employee's or former Employee's surviving Spouse and the Employee's or
former Employee's Spouse or former Spouse who is the alternate payee under a
Qualified Domestic Relations Order, are Distributees with regard to the interest
of the Spouse or former Spouse.

         1.15 "ELIGIBLE RETIREMENT PLAN" means an individual retirement account
described in section 408(a) of the Code, an individual retirement annuity
described in section 408(b) of the Code, an annuity plan described in section
403(a) of the Code, or a qualified trust described in section 401(a) of the
Code, that accepts the Distributee's Eligible Rollover Distribution. However, in
the case of an Eligible Rollover Distribution to the surviving Spouse, an
Eligible Retirement Plan is an individual retirement account or individual
retirement annuity.


                                      I-3
<PAGE>   11

         1.16 "ELIGIBLE ROLLOVER DISTRIBUTION" as defined in section 402 of the
Code means any distribution of all or any portion of the balance to the credit
of the Distributee, except that an Eligible Rollover Distribution does not
include: (a) any distribution that is one of a series of substantially equal
periodic payments (not less frequently than annually) made for the life (or life
expectancy) of the Distributee or the joint lives (or joint life expectancies)
of the Distributee and the Distributee's Beneficiary, or for a specified period
of ten years or more; (b) any distribution to the extent the distribution is
required under section 401(a)(9) of the Code; and (c) the portion of any
distribution that is not includable in gross income (determined without regard
to the exclusion for net unrealized appreciation with respect to employer
securities).

         1.17 "EMPLOYEE" means, except as otherwise specified in this Section,
all common law employees of an Affiliated Employer and all Leased Employees.

         1.18 "EMPLOYER" OR "EMPLOYERS" means the Sponsor and any other business
organization which has adopted this Plan.

         1.19 "ERISA" means the Employee Retirement Income Security Act of 1974,
as amended from time to time.

         1.20 "EXCESS DEFERRAL" means that part, if any, of the Salary Deferral
Contribution of a Member for his taxable year which, when added to the amounts
he deferred under other plans or arrangements described in sections 401(k),
408(k) and 403(b) of the Code, exceeds the deferral dollar limitation permitted
by section 402(g) of the Code.

         1.21 "FIVE PERCENT OWNER" means an Employee who is a five percent owner
as defined in section 416(i) of the Code.

         1.22 "HIGHLY COMPENSATED EMPLOYEE" means an Employee of an Employer or
an Affiliated Employer who, during the Plan Year or the preceding Plan Year, (a)
was at any time a Five Percent Owner at any time during the Plan Year or the
preceding Plan Year or (b) had Annual Compensation from the Affiliated Employers
in excess of $80,000.00 (as adjusted from time to time by the Secretary of the
Treasury) for the preceding Plan Year.

         1.23 "HOUR OF SERVICE" means each hour for which an Employee is paid or
entitled to payment for the performance of duties for an Affiliated Employer.

         1.24 "LEASED EMPLOYEE" means any person who (a) is not a common law
employee of an Affiliated Employer, (b) pursuant to an agreement between an
Affiliated Employer and any other person, has performed services for an
Affiliated Employer (or for an Affiliated Employer and related persons
determined in accordance with section 414(n)(6) of the Code) on a substantially
full-time basis for a period of at least one year and (c) performs the services
under primary direction and control of the recipient.

         1.25 "MATCHED SALARY DEFERRAL CONTRIBUTION" means that portion of the
Salary Deferral Contribution attributable to each Member that does not exceed
six percent of the Member's Considered Compensation earned while the Employee
was a Member.


                                      I-4
<PAGE>   12

         1.26 "MEMBER" means the person or persons employed by an Employer
during the Plan Year and eligible to participate in the Plan.

         1.27 "NON-HIGHLY COMPENSATED EMPLOYEE" means an Employee of the
Employer who is not a Highly Compensated Employee.

         1.28 "PERIOD OF SERVICE" means a period of employment with an
Affiliated Employer which commences on the day on which an Employee performs his
initial Hour of Service or performs his initial Hour of Service upon returning
to the employ of an Affiliated Employer, whichever is applicable, and ends on
the date the Employee Severs Service.

         1.29 "PERIOD OF SEVERANCE" means the period of time commencing on the
date an Employee Severs Service and ending on the date the Employee again
performs an Hour of Service.

         1.30 "PLAN" means the Plan, including all subsequent amendments.

         1.31 "PLAN YEAR" means the calendar year, the fiscal year of the Plan.

         1.32 "QUALIFIED DOMESTIC RELATIONS ORDER" means a qualified domestic
relations order as defined in section 414(p) of the Code.

         1.33 "QJSA" means a qualified joint and survivor annuity which is
purchased with the Member's or former Member's Account balance as of the date of
distribution to provide equal monthly payments for the life of the Member or
former Member, and after his death, monthly payments for the life of his
surviving Spouse in a monthly amount equal to one-half the amount of the monthly
payment made while he was alive.

         1.34 "QPSA" means a qualified preretirement survivor annuity which is
purchased with the Member's Account balance as of the date of distribution that
will provide equal monthly payments for the life of the surviving Spouse.

         1.35 "REGULATION" means the Department of Treasury regulation
specified, as it may be changed from time to time.

         1.36 "REQUIRED BEGINNING DATE" means:

                  (a) in the case of an individual who is not a Five Percent
         Owner in the Plan Year that ends in the calendar year in which he
         attains age 70 1/2, the Required Beginning Date is April 1 of the
         calendar year following the later of (i) the calendar year in which the
         individual attains age 70 1/2, or (ii) the calendar year in which the
         individual Severs Service; and

                  (b) in the case of an individual who is a Five Percent Owner
         in the Plan Year that ends in the calendar year in which he attains age
         70 1/2, the Required Beginning Date is April 1 of the calendar year in
         which he attains age 70 1/2.


                                      I-5
<PAGE>   13

         1.37 "RETIREMENT AGE" means the later of time a Member attains age 65
or the fifth anniversary of the date he commenced participation in the Plan.
Once a Member has attained his Retirement Age he shall have a 100 percent
nonforfeitable interest in his Account balance at all times.

         1.38 "ROLLOVER CONTRIBUTION" means the amount contributed by a Member
of the Plan which consists of any part of an eligible rollover distribution (as
defined in section 402 of the Code) from a qualified employee trust described in
section 401(a) of the Code.

         1.39 "SEPARATION FROM SERVICE" means an individual's termination of
employment with an Affiliated Employer without commencing or continuing
employment with any other Affiliated Employer.

         1.40 "SERVICE" means the period or periods that a person is paid or is
entitled to payment for performance of duties with an Affiliated Employer.

         1.41 "SEVERS SERVICE" means the earlier of the following events: (a)
the Employee's quitting, retiring, dying or being discharged, (b) the completion
of a period of 365 continuous days in which the Employee remains absent from
Service (with or without pay) for any reason other than quitting, retiring,
dying or being discharged, such as vacation, holiday, sickness, disability,
leave of absence, layoff or any other absence or (c) the second anniversary of
the commencement of a continuous period of absence occasioned by the reason of
the pregnancy of the Employee, the birth of a child of the Employee, the
placement of a child with the Employee in connection with the adoption of the
child by the Employee or the caring for the child for a period commencing
immediately after the child's birth or placement.

         1.42 "SPONSOR" means Piper Impact, Inc., a Delaware corporation.

         1.43 "SPONSOR STOCK" means the common stock of Quanex Corporation, a
Delaware corporation, the parent of the Sponsor.

         1.44 "SPOUSE" means the person to whom the Member or former Member is
married under applicable local law. In addition, to the extent provided in a
Qualified Domestic Relations Order, a surviving former spouse of a Member or
former Member will be treated as the Spouse of the Member or former Member, and
to the same extent any current spouse of the Member or former Member will not be
treated as a Spouse of the Member or former Member.

         1.45 "TRANSFERRED" means, when used with respect to an Employee, the
termination of employment with one Employer and the contemporaneous commencement
of employment with another Employer.

         1.46 "TRUST" means the one or more trust estates created to fund the
Plan.

         1.47 "TRUSTEE" means collectively one or more persons or corporations
with trust powers which have been appointed by the initial Sponsor and have
accepted the duties of Trustee and any successor appointed by the Sponsor.


                                      I-6
<PAGE>   14

         1.48 "TRUST FUND" means all of the trust estates established under the
terms of the Plan to fund the Plan, whether held to fund a particular group of
Accounts or held to fund all of the Accounts of Members, collectively.

         1.49 "VALUATION DATE" means each business day of the Plan Year.


                                      I-7
<PAGE>   15

                                   ARTICLE II

                                 ACTIVE SERVICE

         2.01 WHEN ACTIVE SERVICE BEGINS. For purposes of eligibility and
vesting, Active Service begins when an Employee first performs an Hour of
Service for an Affiliated Employer. Once an Employee has begun Active Service
for purposes of eligibility or vesting and Severs Service he shall recommence
Active Service for those purposes when he again performs an Hour of Service for
an Affiliated Employer.

         2.02 AGGREGATION OF SERVICE. When determining an Employee's Active
Service, all Periods of Service, whether or not completed consecutively, shall
be aggregated on a per day basis. For purposes of eligibility and vesting, only
full years of Active Service shall be counted. In aggregating Active Service, 30
days shall be counted as one month and 12 months shall be counted as one year.
No fractional years shall be counted for purposes of eligibility or vesting.

         2.03 PERIODS OF SERVICE OF LESS THAN ONE YEAR. If an Employee performs
an Hour of Service within 12 months after he Severs Service, the intervening
Period of Severance shall be counted as a Period of Service.

         2.04 SERVICE PRIOR TO SEVERANCE. If an Employee Severs Service at a
time when he does not have any vested right to amounts credited to his Matching
Employer Contribution Account or his Supplemental Contribution Account and the
Period of Severance continues for a continuous period of five years or more, the
Period of Service completed by the Employee before the Period of Severance shall
not be taken into account if his Period of Severance equals or exceeds his
Period of Service, whether or not consecutive, completed before the Period of
Severance.

         2.05 PERIODS OF SEVERANCE DUE TO CHILD BIRTH OR ADOPTION. If the period
of time between the first anniversary of the first day of an absence from
Service by reason of the pregnancy of the Employee, the birth of a child of the
Employee, the placement of a child with the Employee in connection with the
adoption of the child by the Employee or for purposes of caring for the child
for a period beginning immediately following the birth or placement and the
second anniversary of the first day of the absence occurs during or after the
first Plan Year beginning after December 31, 1984, it shall neither be counted
as a Period of Service nor of Severance.

         2.06 TRANSFERS. If an Employee of one Employer is Transferred to the
service of another Employer, his Active Service shall not be interrupted and he
shall continue to be in Active Service for purposes of eligibility, vesting and
allocation of Contributions and/or forfeitures. If an Employee is transferred to
the service of an Affiliated Employer that has not adopted the Plan he will not
Sever Service; however, even though he shall continue to be in Active Service
for eligibility and vesting purposes he shall not receive any allocation of
Contributions or forfeitures.

         2.07 EMPLOYMENT RECORDS CONCLUSIVE. The employment records of the
Employer shall be conclusive for all determinations of Active Service.


                                      II-1
<PAGE>   16

         2.08 SERVICE CREDIT REQUIRED UNDER FEDERAL LAW. An Employee shall be
credited with such additional years of Active Service as are required under any
applicable law of the United States.

         2.09 SPECIAL TRANSITIONAL RULE. Any person who was an Employee before
March 1, 1997, will have all or a portion of his Active Service figured under
the provisions of the Plan in effect before March 1, 1997, if that method of
calculating service is more beneficial for the Employee than the method
otherwise set out in this Article II.

         2.10 CREDIT FOR SERVICE WITH PIPER IMPACT, INC. A TENNESSEE
CORPORATION. For purposes of determining an Employee's Active Service for
eligibility to participate and vesting, his service with Piper Impact, Inc., a
Tennessee corporation will be counted as Active Service under the Plan.


                                      II-2
<PAGE>   17

                                   ARTICLE III

                                   ELIGIBILITY

         3.01 ELIGIBILITY REQUIREMENTS. Effective April 1, 1997, each Employee
shall be eligible to participate in the Plan beginning on the entry date which
occurs with or next follows the date on which the Employee completes three
months of Active Service. However, all Employees who are included in a unit of
Employees covered by a collective bargaining agreement between the Employees'
representative and the Employer shall be excluded, even if they have met the
requirements for eligibility, if there has been good faith bargaining between
the Employer and the Employees' representative pertaining to retirement benefits
and the agreement does not require the Employer to include such Employees in the
Plan. In addition, a Leased Employee shall not be eligible to participate in the
Plan unless the Plan's qualified status is dependent upon coverage of the Leased
Employee. An Employee who is a nonresident alien (within the meaning of section
7701(b) of the Code) and receives no earned income (within the meaning of
section 911(d)(2) of the Code) from any Affiliated Employer that constitutes
income from sources within the United States (within the meaning of section
861(a)(3) of the Code) is not eligible to participate in the Plan. An Employee
who is a nonresident alien (within the meaning of section 7701(b) of the Code)
and who does receive earned income (within the meaning of section 911(d)(2) of
the Code) from any Affiliated Employer that constitutes income from sources
within the United States (within the meaning of section 861(a)(3) of the Code)
all of which is exempt from United States income tax under an applicable tax
convention is not eligible to participate in the Plan. An Employee who is
expatriated to the United States from another country is not eligible to
participate in the Plan for so long as he continues to accrue deferred
compensation or retirement benefits under any agreement or program to which an
Affiliated Employer other than an Employer is a party. Finally, an Employee who
is employed outside the United States is not eligible to participate in the Plan
unless the Committee elects to permit him to participate in the Plan. The Plan's
entry dates will be January 1, April 1, July 1 and October 1 of each Plan Year.

         3.02 ELIGIBILITY UPON REEMPLOYMENT. If an Employee Severs Service with
the Employer prior to the date he initially begins participating in the Plan, he
shall be eligible to begin participation in this Plan on the later of the date
he would have become a Member if he did not Sever Service or the date on which
he performs an Hour of Service after he Severs Service. Subject to Section 3.03,
once an Employee becomes a Member, his eligibility to participate in the Plan
shall continue until he Severs Service.

         3.03 CESSATION OF PARTICIPATION. An individual who has become a Member
will cease to be a Member on the earliest of the date on which he (a) Severs
Service, (b) is transferred from the employ of an Employer to the employ of an
Affiliated Employer that has not adopted the Plan, (c) becomes included in a
unit of employees covered by a collective bargaining agreement that does not
require coverage of those employees under the Plan, (d) becomes a Leased
Employee, or (e) becomes included in another classification of Employees who,
under the terms of the Plan, are not eligible to participate. Under these
circumstances, the Member's Account becomes frozen; he cannot contribute to the
Plan or share in the allocation of any Employer Contributions or forfeitures for
the frozen period. However, his Accounts shall continue to share in any Plan
income allocable to his Accounts during the frozen period of time.




                                     III-1
<PAGE>   18

         3.04 RECOMMENCEMENT OF PARTICIPATION. A former Member will again become
a Member on the day on which he again becomes included in a classification of
Employees who, under the terms of the Plan, are eligible to participate.


                                     III-2
<PAGE>   19

                                   ARTICLE IV

                                  CONTRIBUTIONS

         4.01 SALARY DEFERRAL CONTRIBUTIONS. The Employer shall make a Salary
Deferral Contribution in an amount equal to the amount by which its Members'
Considered Compensation was reduced as a result of salary deferral agreements.
Any such salary deferral agreement shall be an agreement in a form satisfactory
to the Committee to prospectively receive Considered Compensation from the
Employer in a reduced amount and to have the Employer contribute an amount equal
to the amount of the reduction to the Trust Fund on account of the Member. Any
such salary deferral agreement shall be revocable in accordance with its terms,
provided that no revocation shall be retroactive or permit payment to the Member
of the amount required to be contributed to the Trust Fund. A Member shall be
entitled to prospectively modify his salary deferral agreement at least once a
year. A Member's right to benefits derived from Salary Deferral Contributions
made to the Plan on his behalf shall be nonforfeitable. The election to have
Salary Deferral Contributions made, the ability to change the rate of Salary
Deferral Contributions, the right to suspend Salary Deferral Contributions, and
the manner of commencing new Salary Deferral Contributions shall be permitted
under any uniform method determined by the Committee from time to time.

         4.02 EMPLOYER MATCHING CONTRIBUTIONS. The Employer shall make an
Employer Matching Contribution in an amount equal to 25 percent of the Matched
Salary Deferral Contributions for all Members.

         4.03 SUPPLEMENTAL CONTRIBUTIONS. The Employer may contribute for any
Plan Year a Supplemental Contribution in such amount, if any, as shall be
determined by the Employer.

         4.04 ROLLOVER CONTRIBUTIONS AND PLAN-TO-PLAN TRANSFERS. The Committee
may permit Rollover Contributions by Members and/or direct transfers to or from
another qualified plan on behalf of Members from time to time. If Rollover
Contributions and/or direct transfers to or from another qualified plan are
permitted, the opportunity to make those contributions and/or direct transfers
must be made available to Members on a nondiscriminatory basis. For this purpose
only, all Employees who are included in a classification of Employees who are
eligible to participate in the Plan shall be considered to be Members of the
Plan even though they may not have met the Active Service requirements for
eligibility. However, they shall not be entitled to elect to have Salary
Deferral Contributions made or to share in Employer Contributions or forfeitures
unless and until they have met the requirements for eligibility, contributions
and allocations. A Rollover Contribution shall not be accepted unless it is
directly rolled over to the Plan in a rollover described in section 401(a)(31)
of the Code. A Member shall not be permitted to make a Rollover Contribution if
the property he intends to contribute is for any reason unacceptable to the
Trustee. A Rollover Contribution Account shall be established for any Employee
who makes a Rollover Contribution.

         4.05 QUALIFIED NONELECTIVE EMPLOYER CONTRIBUTIONS. The Employer may
make a Qualified Nonelective Employer Contribution in such amount, if any, as
shall be determined by the Employer. A Member's right to benefits derived from
Qualified Nonelective Employer Contributions made to the Plan on his behalf
shall be nonforfeitable. In no event will Qualified


                                      IV-1
<PAGE>   20

Nonelective Employer Contributions be distributed before Salary Deferral
Contributions may be distributed

         4.06 RESTORATION CONTRIBUTIONS. The Employer shall, for each Plan Year,
make a restoration contribution in an amount equal to the sum of (a) such
amount, if any, as shall be necessary to fully restore all Matching Employer
Contribution Accounts and Supplemental Contribution Accounts required to be
restored pursuant to the provisions of Section 5.10, after application of all
forfeitures and any appreciation in the value of the Trust Fund available for
such restoration; plus (b) an amount equal in value to the value of forfeited
benefits described in and payable under Section 6.09.

         4.07 NONDEDUCTIBLE CONTRIBUTIONS NOT REQUIRED. Notwithstanding any
other provision of the Plan, no Employer shall be required to make any
contribution that would be a "nondeductible contribution" within the meaning of
section 4972 of the Code.

         4.08 FORM OF PAYMENT OF CONTRIBUTIONS. Contributions may be paid to the
Trustee either in cash or in qualifying employer securities (as such term is
defined in Section 407(d) of ERISA) or any combination thereof, provided that
payment may not be made in any form constituting a prohibited transaction under
section 4975 of the Code or Section 406 of ERISA.

         4.09 DEADLINE FOR PAYMENT OF EMPLOYER CONTRIBUTIONS. Salary Deferral
Contributions shall be paid to the Trustee in installments. The installment for
each payroll period shall be paid as soon as administratively feasible, and
shall be in an amount equal to the amount by which all Members' Considered
Compensation was reduced pursuant to salary deferral agreements for such period.
The Matching Employer Contributions, Supplemental Contributions and Qualified
Nonelective Employer Contributions for a Plan Year shall be paid to the Trustee
in one or more installments, as the Employer may from time to time determine;
provided, however, that such contributions may not be paid later than the time
prescribed by law (including extensions thereof) for filing the Employer's
income tax return for its taxable year ending with or within such Plan Year.

         4.10 RETURN OF CONTRIBUTIONS FOR MISTAKE, DISQUALIFICATION OR
DISALLOWANCE OF DEDUCTION. Subject to the limitations of section 415 of the
Code, the assets of the Trust shall not revert to any Employer or be used for
any purpose other than the exclusive benefit of the Members and their
Beneficiaries and the reasonable expenses of administering the Plan except:

                  (a) any Contribution made because of a mistake of fact may be
         repaid to the Employer within one year after the payment of the
         Contribution;

                  (b) all Contributions are conditioned upon the Plan's initial
         qualification under section 401 of the Code and may be repaid to the
         Employer within one year after the date of denial of the initial
         qualification of the Plan; and

                  (c) all Employer Contributions are conditioned upon their
         deductibility under section 404 of the Code; therefore, to the extent
         the deduction is disallowed, the Contributions may be repaid to the
         Employer within one year after the disallowance.


                                      IV-2
<PAGE>   21

         The Employer has the exclusive right to determine if a Contribution or
any part of it is to be repaid or is to remain as a part of the Trust Fund
except that the amount to be repaid is limited, if the Contribution is made by
mistake of fact or if the deduction for the Contribution is disallowed, to the
excess of the amount contributed over the amount that would have been
contributed had there been no mistake or over the amount disallowed. Earnings
which are attributable to any excess contribution cannot be repaid. Losses
attributable to an excess contribution must reduce the amount that may be
repaid. All repayments of Contributions made due to a mistake of fact or with
respect to which a deduction is disallowed are limited so that the balance in a
Member's Account cannot be reduced to less than the balance that would have been
in the Member's Account had the mistaken amount or the amount disallowed never
been contributed.


                                      IV-3
<PAGE>   22

                                    ARTICLE V

                      ALLOCATION AND VALUATION OF ACCOUNTS


         5.01 INFORMATION STATEMENTS FROM EMPLOYER. As soon as practical after
the last day of each calendar quarter, the Employer shall provide the Committee
with a schedule setting forth the amount of its Salary Deferral Contribution,
Employer Matching Contribution, Supplemental Employer Contribution, Qualified
Nonelective Employer Contribution, and restoration contribution; the names of
its Members, the number of years of Active Service of each of its Members, the
amount of Considered Compensation paid to each Member, and the amount of
Considered Compensation paid to all its Members. Such schedules shall be
conclusive evidence of such facts.

         5.02 ALLOCATION OF SALARY DEFERRAL CONTRIBUTION. The Committee shall
allocate the Employer's Salary Deferral Contribution among the Employer's
Members by allocating to each such Member the amount by which his Considered
Compensation was reduced pursuant to a salary deferral agreement (as described
in Section 4.1) and shall credit each such Member's share to the Member's Salary
Deferral Contribution Account.

         5.03 ALLOCATION OF MATCHING EMPLOYER CONTRIBUTION. The Committee shall
separately allocate the Employer Matching Contribution among the Employer's
Members in the proportion which the Matched Salary Deferral Contributions of
each such Member bears to the total Matched Salary Deferral Contributions of all
such Members. Each Member's proportionate share shall be credited to his
Matching Employer Contribution Account.

         5.04 ALLOCATION OF SUPPLEMENTAL CONTRIBUTION. The Committee shall
allocate the Supplemental Contribution among the Employer's Members in the
proportion that the Considered Compensation of each Member for the Plan Year
bears to the total Considered Compensation of all Members for the Plan Year.
Each Member's proportionate share shall be credited to his Supplemental
Contribution Account.

         5.05 ALLOCATION OF QUALIFIED NONELECTIVE EMPLOYER CONTRIBUTION. The
Committee shall separately allocate the Qualified Nonelective Employer
Contribution among the Non-Highly Compensated Employees who are Members based
upon each such Member's Considered Compensation as compared to the Considered
Compensation of all such Members.

         5.06 ALLOCATION OF DIVIDENDS ON SPONSOR STOCK. Cash and Sponsor Stock
dividends paid with respect to Sponsor Stock shall be allocated among the
Members and former Members with Account balances in proportion to the number of
shares of Sponsor Stock (of the class with respect to which the dividend is
paid) allocated to Member's or former Member's Account as of the record date for
the dividend.

         5.07 SPONSOR STOCK SPLITS. If the shares of Company Stock are
subdivided, the additional shares acquired by the Trustee upon the subdivision
will be allocated among the Members and former Members with Account balances in
proportion to the number of shares of Sponsor Stock (of


                                      V-1
<PAGE>   23

the class with respect to which the subdivision is made) allocated to the
Member's or former Member's Account as of the record date for the subdivision.

         5.08 VALUATION OF ACCOUNTS. A Member's or former Member's Accounts
shall be valued at fair market value on each Valuation Date. The earnings and
losses attributable to any asset in the Trust Fund will be allocated solely to
the Account of the Member or former Member on whose behalf the investment in the
asset was made. In determining the fair market value of the Members' or former
Member's Accounts, the Trustee shall utilize such sources of information as it
may deem reliable including, but not limited to, stock market quotations,
statistical evaluation services, newspapers of general circulation, financial
publications, advice from investment counselors or brokerage firms, or any
combination of sources which in the opinion of the Trustee will provide the
price such assets were last traded at on a registered stock exchange; provided,
however, that with respect to regulated investment company shares, the Trustee
shall rely exclusively on information provided to it by the investment adviser
to such funds.

         5.09 ALLOCATION OF FORFEITURES. At the time a forfeiture occurs, the
amount forfeited will first be used to reinstate any Account required to be
reinstated under Section 5.10, and any remaining amount will be applied to the
payment of Matching Employer Contributions or Supplemental Contributions.

         5.10 RESTORATION OF FORFEITED AMOUNTS. If a Member or former Member who
forfeited any portion of his Matching Employer Contribution Account or his
Supplemental Contribution Account pursuant to the provisions of Section 6.10
resumes employment covered under the Plan, then the following provisions shall
apply:

                  (a) REPAYMENT REQUIREMENT. The Member's Employer Matching
         Contribution Account and Supplemental Contribution Account shall be
         restored if he repays to the Trustee the full amount of any
         distribution from the Employer Matching Contribution Account and
         Supplemental Contribution Account with respect to which the forfeiture
         arose. Such repayment must be made prior to the earlier of (a) the date
         on which he incurs a Period of Severance of five years, or (b) the
         fifth anniversary of the first date on which the Member is subsequently
         re-employed by the Employer.

                  (b) MEMBERS WITH NO VESTED INTEREST. If a Member or former
         Member who forfeited any portion of his Employer Matching Contribution
         Account pursuant to the provisions of Section 6.10 received no
         distribution from his Employer Matching Contribution Account or his
         Supplemental Contribution Account as a result of his termination of
         participation in the Plan (because his vested percentage was zero),
         that Account will be restored if, and only if, he resumes employment
         covered under the Plan prior to incurring a Period of Severance of five
         years.

                  (c) AMOUNT RESTORED. The amount to be restored under the
         preceding provisions of this Section shall be the dollar value of the
         amount in the Member's Employer Matching Contribution Account and
         Supplemental Contribution Account, both the amount distributed and the
         amount forfeited, unadjusted by any subsequent gains or losses. The
         Member's Employer Matching Contribution Account or his Supplemental
         Contribution Account


                                      V-2
<PAGE>   24


         balance shall be restored as soon as administratively practicable after
         the later of the date the Member resumes employment covered under the
         Plan or the date on which any required repayment is completed. No
         distribution shall be made to a Member from his Employer Matching
         Contribution Account or his Supplemental Contribution Account as a
         result of a prior Separation From Service after the restoration of such
         Account has been effectuated.

                  (d) NO OTHER BASIS FOR RESTORATION. Except as otherwise
         provided above, a Member's Employer Matching Contribution Account and
         Supplemental Contribution Account shall not be restored upon resumption
         of employment covered by the Plan. Any portion of the Trust Fund
         attributable to Years of Service prior to resumption of employment by a
         Member whose Employer Matching Contribution Account and Supplemental
         Contribution Account has not been restored shall be held and
         distributed in accordance with applicable provisions of the Plan and
         elections made thereunder. A separate Employer Matching Contribution
         Account and Supplemental Contribution Account shall be established and
         maintained for Employer Matching Contributions and Supplemental
         Contributions allocable to such a Member after his resumption of
         employment covered by the Plan.

         5.11 NO VESTING UNLESS OTHERWISE PRESCRIBED. No allocations,
adjustments, credits, or transfers shall ever vest in any Member or former
Member any right, title, or interest in the Trust Fund except at the times and
upon the terms and conditions herein set forth.


                                      V-3
<PAGE>   25


                                   ARTICLE VI

                                    BENEFITS


         6.01 VALUATION OF ACCOUNTS FOR WITHDRAWALS AND DISTRIBUTIONS. For the
purpose of making a distribution or withdrawal, a Member's Accounts shall be his
Accounts as valued as of the Valuation Date which is coincident with or next
follows the event which caused the distribution or withdrawal, adjusted for
Contributions, distributions and withdrawals, if any, made between the Valuation
Date and that event.

         6.02 DEATH BENEFIT. Subject to Sections 6.18 and 6.19 and Appendix C,
if a Member or former Member dies, the death benefit payable to his Beneficiary
shall be 100 percent of the remaining amount in all of his Accounts as of the
day he dies.

         6.03 RETIREMENT BENEFIT. An Employee may retire on the first day of any
month after he attains his Retirement Age. If a Member retires, he is entitled
to receive 100 percent of all of his Accounts as of the day he retires.

         6.04 DISABILITY BENEFIT. Upon an Employee's Separation From Service due
to a Disability, he is entitled to receive 100 percent of all of his Accounts as
of the day he terminated because of his Disability.

         6.05 SEVERANCE BENEFIT. Upon an Employee's Separation From Service for
any reason other than death, retirement after attaining Retirement Age or
disability, he is entitled to receive (a) 100 percent of all of his Accounts,
except his Matching Employer Contribution Account and Supplemental Contribution
Account, and (b) that percentage of his Matching Employer Contribution Account
and Supplemental Contribution Account, if any, as shown in the vesting schedule
below, as of the date of his Separation From Service.

<TABLE>
<CAPTION>
                                                                            Percentage of Amount Invested
                                                                               In Accounts Containing
        Completed Years of Active Service                                      Employer Contributions
        ---------------------------------                                      ----------------------
<S>                                                                         <C>
               Less than two years......................................................  0%
               Two years but less than three years...................................... 20%
               Three years but less than four years..................................... 40%
               Four years but less than five years...................................... 60%
               Five years but less than six years....................................... 80%
               Six years or more........................................................100%
</TABLE>


         Prior to a Member's Separation From Service, he will have a
nonforfeitable interest in the portion of the Matching Employer Contributions
and Supplemental Contributions specified in the above vesting schedule.


                                      VI-1
<PAGE>   26


         6.06 DISTRIBUTIONS PURSUANT TO QUALIFIED DOMESTIC RELATIONS ORDERS. The
Committee will instruct the Trustee to pay benefits in accordance with the terms
of any order that has been determined, in accordance with Plan procedures, to be
a Qualified Domestic Relations Order. A Qualified Domestic Relations Order may
require the payment of an immediate cash lump sum to an alternate payee even if
the Member or former Member is not then entitled to receive an immediate payment
of Plan benefits.

         6.07 FINANCIAL HARDSHIP DISTRIBUTIONS.

                  (a) General. Prior to his Separation From Service, a Member is
         entitled to receive a distribution from his Salary Deferral
         Contribution Account, his Rollover Account, his vested interests in his
         Matching Employer Contribution Account and his Supplemental
         Contribution Account in the event of an immediate and heavy financial
         need incurred by the Member and the Committee's determination that the
         withdrawal is necessary to alleviate that hardship.

                  (b) Permitted Reasons For Financial Hardship Withdrawals. A
         distribution shall be made on account of financial hardship only if the
         distribution is for: (i) Expenses for medical care described in section
         213(d) of the Code previously incurred by the Member, the Member's
         Spouse, or any dependents of the Member (as defined in section 152 of
         the Code) or necessary for these persons to obtain medical care
         described in section 213(d) of the Code, (ii) costs directly related to
         the purchase (excluding mortgage payments) of a principal residence for
         the Member, (iii) payment of tuition and related educational fees for
         the next 12 months of post-secondary education for the Member, his
         Spouse, children, or dependents (as defined in section 152 of the
         Code), (iv) payments necessary to prevent the eviction of the Member
         from his principal residence or foreclosure on the mortgage of the
         Member's principal residence, or (v) any other event added to this list
         by the Commissioner of Internal Revenue.

                  (c) Amount. A distribution to satisfy an immediate and heavy
         financial need shall not be made in excess of the amount of the
         immediate and heavy financial need of the Member and the Member must
         have obtained all distributions, other than hardship distributions, and
         all nontaxable (at the time of the loan) loans currently available
         under all plans maintained by the Employer. The amount of a Member's
         immediate and heavy financial need includes any amounts necessary to
         pay any federal, state or local income taxes or penalties reasonably
         anticipated to result from the financial hardship distribution.

                  (d) Suspension of Participation in Certain Benefit Programs.
         The Member's hardship distribution shall terminate his right to have
         the Employer make any Salary Deferral Contributions on his behalf until
         the next time Salary Deferral Contributions are permitted after the
         lapse of 12 months following the hardship distribution and his timely
         filing of a written request to resume his Salary Deferral
         Contributions. In addition, for 12 months after he receives a hardship
         distribution from the Plan, the Member is prohibited from making
         elective contributions and employee contributions to all other
         qualified and nonqualified plans of deferred compensation maintained by
         the Employer, including stock option plans, stock purchase plans and
         Code section 401(k) cash or deferred arrangements that are part of


                                      VI-2
<PAGE>   27

         cafeteria plans described in section 125 of the Code. However, the
         Member is not prohibited from making contributions to a health or
         welfare benefit plan, including one that is part of a cafeteria plan
         within the meaning of section 125 of the Code.

                  (e) Resumption of Salary Deferral Contributions. When the
         Member resumes Salary Deferral Contributions, he cannot have the
         Employer make any Salary Deferral Contributions in excess of the limit
         in section 402(g) of the Code for that taxable year reduced by the
         amount of Salary Deferral Contributions made by the Employer on the
         Member's behalf during the taxable year of the Member in which he
         received the hardship distribution.

                  (f) Order of Withdrawals. Financial hardship distributions
         will be made in the following order: First withdrawals will be made
         from the Member's Rollover Account, then from his Matching Employer
         Contribution Account, then from his Supplemental Contribution Account,
         and finally, from his Salary Deferral Contribution Account. A Member
         shall not be entitled to receive a financial hardship distribution of
         any amount credited to his Qualified Nonelective Employer Contribution
         Account, or of any income that is allocable or credited to his Member's
         Salary Deferral Contribution Account.

                  (g) Method of Payment. Distributions pursuant to this Section
         6.07 will normally be paid in lump sums. However, the QJSA requirements
         of Section 6.13 will apply to any distributions made under this Section
         6.07 on or after the date as of which an Employer elects to treat the
         Plan and the Quanex Corporation Salaried Employees' Pension Plan as one
         plan for purposes of section 410(b) of the Code.

         6.08 AGE 59 1/2 DISTRIBUTIONS. Prior to his Separation From Service, a
Member may withdraw part or all of his vested Account balance on or after the
date that he attains age 59 1/2. Distributions pursuant to this Section 6.08
will normally be paid in lump sums. However, the QJSA requirements of Section
6.13 will apply to any distributions made under this Section 6.08 on or after
the date as of which an Employer elects to treat the Plan and the Quanex
Corporation Salaried Employees Pension Plan as one plan for purposes of section
410(b) of the Code.

         6.09 LOANS. The Committee may direct the Trustees to make loans to
Members (and Beneficiaries who are "parties in interest" within the meaning of
ERISA) who have a vested interest in the Plan. The Loan Committee established by
the Committee will be responsible for administering the Plan loan program. All
loans will comply with the following requirements:

                  (a) All loans will be made solely from the Member's or
         Beneficiary's Account.

                  (b) Loans will be available on a nondiscriminatory basis to
         all Beneficiaries who are "parties in interest" within the meaning of
         ERISA, and to all Members.

                  (c) Loans will not be made for less than $1,000.00.

                  (d) The maximum amount of a loan may not exceed the lesser of
         (A) $50,000.00 reduced by the person's highest outstanding loan balance
         from the Plan during the preceding


                                      VI-3
<PAGE>   28

         one-year period, or (B) one-half of the present value of the person's
         vested Account balance under the Plan determined as of the date on
         which the loan is approved by the Loan Committee.

                  (e) Any loan from the Plan will be evidenced by a note or
         notes (signed by the person applying for the loan) having such
         maturity, bearing such rate of interest, and containing such other
         terms as the Loan Committee will require by uniform and
         nondiscriminatory rules consistent with this Section and proper lending
         practices.

                  (f) All loans will bear a reasonable rate of interest which
         will be established by the Loan Committee. In determining the proper
         rate of interest to be charged, at the time any loan is made or
         renewed, the Loan Committee will contact at least two of the largest
         banks in the geographic location in which the Member or Beneficiary
         resides to determine what interest rate the banks would charge for a
         similar loan taking into account the collateral offered.

                  (g) Each loan will be fully secured by a pledge of the
         borrowing person's vested Account balance. No more than 50 percent of
         the person's vested Account balance (determined immediately after the
         origination of the loan) will be considered as security for any loan.

                  (h) The term of the loan will not be less than 18 months.
         Generally, the term of the loan will not be more than five years. The
         Loan Committee may agree to a longer term (but not more than seven
         years) only if such term is otherwise reasonable and the proceeds of
         the loan are to be used to acquire a dwelling which will be used within
         a reasonable time (determined at the time the loan is made) as the
         principal residence of the borrowing person.

                  (i) The loan agreement will require level amortization over
         the term of the loan. A Member's loan agreement will also require that
         loan repayments be made through payroll deductions.

                  (j) If a person fails to make a required payment within 30
         days of the due date set forth in the loan agreement, the loan will be
         in default.

                  (k) If a Member has an outstanding loan from the Plan at the
         time of his Separation From Service, the outstanding loan principal
         balance and any accrued but unpaid interest will become immediately due
         in full. The Member will have the right to immediately pay the Trustee
         that amount. If the Member fails to repay the loan, the Trustee will
         foreclose on the loan and the Member will be deemed to have received a
         Plan distribution of the amount foreclosed upon. The Trustee will not
         foreclose upon a Member's Salary Deferral Contributions Account or
         Qualified Nonelective Employer Contributions Account until the Member's
         Separation From Service.

                  (l) If a Beneficiary defaults on his loan, the Trustee will
         foreclose on the loan and the Beneficiary will be deemed to have
         received a Plan distribution of the amount foreclosed upon.


                                      VI-4
<PAGE>   29

                  (m) No person shall be entitled to apply for a new Plan loan
         until at least 90 days have transpired since he fully repaid his last
         loan from the Plan.

                  (n) No amount that is pledged as collateral for a Plan loan to
         a Participant will be available for withdrawal before he has fully
         repaid his loan.

                  (o) All interest payments made pursuant to the terms of the
         loan agreement will be credited to the borrowing person's Account and
         will not be considered as general earnings of the Trust Fund to be
         allocated to other Members.

                  (p) The Spouse of a Member must consent to any loan from the
         Plan that is made, extended or renewed after the date on which an
         Employer elects to treat the Plan and the Quanex Corporation Salaried
         Employees' Pension Plan as one plan for purposes of section 410(b) of
         the Code. The Spouse's consent must (1) be in writing, (2) consent to
         the loan, (3) acknowledge the effect of the Spouse's consent to the
         Member's borrowing from the Plan, and (4) be witnessed by a notary
         public or a Plan representative.

         6.10 FORFEITURE BY LOST MEMBERS OR BENEFICIARIES. If a person who is
entitled to a distribution cannot be located during a reasonable search after
the Trustee has initially attempted making payment, that person's Account shall
be forfeited. However, if at any time prior to the termination of the Plan and
the complete distribution of the Trust Fund, the former Member or Beneficiary
files a claim with the Committee for the forfeited benefit, that benefit shall
be reinstated (without adjustment for trust income or losses during the
forfeited period) effective as of the date of the receipt of the claim. As soon
as appropriate following the Employer's Contribution of the reinstated amount,
it shall be paid to the former Member or Beneficiary in a single sum.

         6.11 FORFEITURE ON TERMINATION OF PARTICIPATION. If as a result of his
Separation From Service a former Member receives, not later than the end of the
second Plan Year following the Plan Year in which his Separation From Service
occurs, a distribution of his entire vested interest in his Account, the
nonvested amount in his Account is immediately forfeited. A former Member who
receives no distribution upon his Separation From Service because he has no
vested interest shall be treated as if he received a distribution of his entire
vested interest and that interest was less than $5,000.00.

         If a former Member who has a vested interest in his Account receives no
distribution or a distribution of less than the full amount of his entire vested
interest as a result of his Separation From Service, the nonvested amount in his
Account is immediately forfeited following five consecutive one-year Periods of
Severance.

         6.12 CLAIMS PROCEDURE. When a benefit is due, the Member or Beneficiary
should submit his claim to the person or office designated by the Committee to
receive claims. Under normal circumstances, a final decision shall be made as to
a claim within 90 days after receipt of the claim. If the Committee notifies the
claimant in writing during the initial 90-day period, it may extend the period
up to 180 days after the initial receipt of the claim. The written notice must
contain the circumstances necessitating the extension and the anticipated date
for the final decision. If a claim


                                      VI-5
<PAGE>   30

is denied during the claims period, the Committee must notify the claimant in
writing. The denial must include the specific reasons for it, the Plan
provisions upon which the denial is based, and the claims review procedure. If
no action is taken during the claims period, the claim is treated as if it were
denied on the last day of the claims period.

         If a Member's or Beneficiary's claim is denied and he wants a review,
he must apply to the Committee in writing. That application may include any
comment or argument the claimant wants to make. The claimant may either
represent himself or appoint a representative, either of whom has the right to
inspect all documents pertaining to the claim and its denial. The Committee may
schedule any meeting with the claimant or his representative that it finds
necessary or appropriate to complete its review.

         The request for review must be filed within 90 days after the denial.
If it is not, the denial becomes final. If a timely request is made, the
Committee must make its decision, under normal circumstances, within 60 days of
the receipt of the request for review. However, if the Committee notifies the
claimant prior to the expiration of the initial review period, it may extend the
period of review up to 120 days following the initial receipt of the request for
a review. All decisions of the Committee must be in writing and must include the
specific reasons for their action and the Plan provisions on which their
decision is based. If a decision is not given to the claimant within the review
period, the claim is treated as if it were denied on the last day of the review
period.

         6.13 NORMAL FORM OF DISTRIBUTIONS. The normal form of distributions
under the Plan is a cash lump sum payment.

         6.14 DIRECT ROLLOVER OPTION. To the extent required under Regulations,
a Distributee has the right to direct that any portion of his Eligible Rollover
Distribution will be directly paid to an Eligible Retirement Plan specified by
him that will accept the Eligible Rollover Distribution.

         6.15 CHOICE OF DISTRIBUTION METHODS. Each Member or former Member shall
have the right to elect the method of distribution applicable to him. An
election of an option available under this Article shall be made within the
90-day period that ends on the Member's or former Member's Annuity Starting
Date, and may be rescinded or changed by a Member or former Member at any time
prior to the distribution. An election, change, or rescission of an option must
be made by executing and properly filing the form or forms approved by the
Committee. Proof of age and other information may be required by the Committee.

         6.16 SINGLE SUM PAYMENT OF SMALL AMOUNTS UPON SEPARATION FROM SERVICE.
Notwithstanding any other provision of the Plan, each Member or former Member
(a) who does not die before the Annuity Starting Date and (b) whose vested
Account balance at the time of a distribution to him on account of his
Separation From Service is less than or equal to $5,000.00, shall be paid in the
form of a single sum payment. A surviving Spouse or other Beneficiary of a
Member or former Member whose Account balance is less than or equal to $5,000.00
shall be paid in the form of a single sum payment. For this purpose, if the
value of a Member's or former Member's Account balance determined at the time of
any prior payment to him exceeded $5,000.00, then the benefit to be distributed
at any subsequent time shall be deemed to exceed that amount.


                                      VI-6
<PAGE>   31

         6.17 CONSENT TO DISTRIBUTIONS UPON SEPARATION FROM SERVICE.
Notwithstanding any other provision of the Plan, no benefit shall be distributed
or commence to be distributed to a Member or former Member prior to his
attainment of the later of age 62 or Retirement Age without his consent, unless
the benefit is payable in a single sum under Section 6.16. Any such consent
shall be valid only if given not more than 90 days prior to the Member's or
former Member's Annuity Starting Date and after his receipt of the notice
regarding benefits described in Section 6.21(a).

         6.18 QUALIFIED JOINT AND SURVIVOR ANNUITY REQUIREMENTS. On and after
the date on which an Employer elects to treat the Plan and the Quanex
Corporation Salaried Employees' Pension Plan as one plan for purposes of section
410(b) of the Code, this Section 6.18 will apply. Except for small benefits
payable under Section 6.16, each Member or former Member who (a) is married on
his Annuity Starting Date and (b) does not die before his Annuity Starting Date
will be paid in the form of a QJSA, unless he and his Spouse make a valid
election to waive this form of payment. Except for small benefits payable under
Section 6.16, each other Member who does not die before the Annuity Starting
Date, will be paid in the form of a life only annuity unless he makes a valid
election to waive this form of payment. A Member's waiver of the QJSA form of
payment will not be effective unless the waiver (1) designates a specific
nonspouse Beneficiary who will receive Plan benefits and (2) specifies the
particular optional form of benefits selected instead of the QJSA. Also, a
Member's or former Member's waiver of the QJSA will not be effective unless his
Spouse signs either a specific or a general consent to his waiver. A specific
spousal consent must (1) be in writing, (2) consent to the waiver of the QJSA,
(3) consent to the specific nonspouse Beneficiary designated by the Member or
former Member to receive Plan benefits, (4) consent to the particular optional
form of benefit selected by the Member or former Member, (5) acknowledge the
effect of the Spouse's consent to the Member's or former Member's waiver of the
QJSA, and (6) be witnessed by a notary public or a Plan representative. A
general spousal consent must (1) be in writing, (2) consent to the Member's or
former Member's waiver of the QJSA, (3) specify that the Member or former Member
can change the Beneficiary designated by him to receive Plan benefits, without
any requirement of further consent by the Spouse, (4) specify that the Member or
former Member can change the optional form of benefit elected by the Member or
former Member, without any requirement of further consent by the Spouse, (5)
acknowledge that the Spouse has the right to limit consent to a specific
Beneficiary and a specific optional form of benefit, and that the Spouse
voluntarily elects to relinquish both of those rights, (6) acknowledge the
effect of the Spouse's consent to the Member's or former Member's waiver of the
QJSA, and (7) be witnessed by a notary public or a Plan representative. However,
a Member's or former Member's election to waive the QJSA shall be effective if
it is established to the satisfaction of the Committee that spousal consent to
his waiver may not be obtained because (1) there is no Spouse, (2) the Spouse
cannot be located, or (3) there exist such other circumstances which obviate the
necessity of obtaining the spousal consent. Any consent by the Member's or
former Member's Spouse (or establishment that the consent of the Member's or
former Member's Spouse may not be obtained) shall be effective only with respect
to such Spouse.

         6.19 QUALIFIED PRERETIREMENT SURVIVOR ANNUITY REQUIREMENTS.

                  (a) General Rules. On and after the date on which an Employee
         elects to treat the Plan and the Quanex Corporation Salaried Employees'
         Pension Plan as one plan for purposes of section 410(b) of the Code,
         this Section 6.19 will apply. Except for small


                                      VI-7
<PAGE>   32

         benefits payable under Section 6.12, the death benefit of a Member or
         former Member who (1) is married on the date of his death and (2) dies
         before his Annuity Starting Date will be paid in the form of a QPSA,
         unless he and his Spouse make a valid election to waive this form of
         payment. Subject to Section 6.21, the surviving Spouse of such a Member
         or former Member may elect to have payments commence to her as soon as
         administratively practicable, or at any later date selected by her.

                  (b) Waivers. Any valid election to waive the QPSA must be made
         in writing by the Member or former Member and consented to by the
         Member's or former Member's Spouse. Any spousal consent to the waiver
         must: (1) be witnessed by a member of the Committee, the Trustee, or a
         notary public, and (2) consent to the specific nonspouse Beneficiary or
         Beneficiaries selected by the Member or former Member (or permit future
         changes in designations by the Member provided that general consent
         requirements similar to those described in Section 6.18 are satisfied).
         However, if the Member or former Member establishes to the satisfaction
         of the Committee or the Trustee that the spouse's written consent
         cannot be obtained because there is no Spouse or the Spouse cannot be
         located, a waiver signed only by the Member or former Member will be
         considered a valid election. The consent to a waiver is valid only with
         respect to the Spouse who signs it; therefore, if the Member or former
         Member remarries after executing a waiver, the Member's or former
         Member's new Spouse must execute a new consent. The Member or former
         Member may revoke a prior waiver without his Spouse's consent at any
         time before benefit payments begin. Except as specified below, an
         election to waive the QPSA will be valid only if it is made after the
         first day of the Plan Year in which the Member or former Member attains
         age 35 and before the Member's or former Member's death.

                  (c) Pre-Age 35 Waivers. A Member or former Member may waive
         the QPSA, with spousal consent, before the first day of the Plan Year
         in which he attains age 35 if the Sponsor provides him a written
         explanation of the QPSA (that meets the requirements of Section 6.20)
         within the period beginning one year before he Severs Service and
         ending one year after he Severs Service. However, any such waiver will
         expire and become invalid beginning on the first day of the Plan Year
         in which the Member or former Member attains age 35.

         6.20 INFORMATION PROVIDED TO MEMBERS. Information regarding the form of
benefits available under the Plan shall be provided to Members or former Members
in accordance with the following provisions:

                  (a) General Information. Except as otherwise provided in
         paragraph (c), the Sponsor shall provide each Member or former Member
         with a written general explanation or description of (1) the
         eligibility conditions and other material features of the optional
         forms of benefit available under the Plan, (2) the relative values of
         the optional forms of benefit available under the Plan, and (3) the
         Member's or former Member's right, if any, to defer receipt of the
         distribution.

                  (b) Time for Giving Notice. The written general explanation or
         description regarding any optional forms of benefit available under the
         Plan shall be provided to a


                                      VI-8
<PAGE>   33

         Member or former Member no less than 30 days and no more than 90 days
         before his Annuity Starting Date unless he legally waives this
         requirement.

                  (c) Exception for Members with Small Benefit Amounts.
         Notwithstanding the preceding provisions of this Section, no
         information regarding any optional forms of benefit otherwise available
         under the Plan shall be provided to the Member or former Member if his
         benefit is payable in a single sum under Section 6.16.

                  (d) QJSA Notice. This paragraph applies on and after the date
         on which an Employer elects to treat the Plan and the Quanex
         Corporation Salaried Employees' Pension Plan as one plan for purposes
         of section 410(b) of the Code. No less than 30 days (seven days if the
         Member or former Member legally waives the 30-day notice requirement)
         and no more than 90 days before the Annuity Starting Date of a Member
         or former Member who is subject to Section 6.18, the Sponsor shall
         provide him a written notice explaining the terms and conditions of
         each retirement option, and in particular (1) the automatic QJSA or
         life annuity, (2) the Member's or former Member's right to make, and
         the effect of, a waiver of the automatic QJSA, (3) the right of the
         Member's or former Member's Spouse to consent or not to consent to such
         a waiver, (4) the right to make, and the effect of, a revocation of a
         previous waiver or election, (5) the eligibility conditions and other
         material features of the optional forms of benefit, (6) the relative
         values of the optional forms of benefit, and (7) the Member's or former
         Member's right to request a written explanation of the financial effect
         upon a Member's or former Member's annuity of electing to waive the
         QJSA or life annuity.

                  (e) QPSA Notice. This paragraph applies on and after the date
         on which an Employer elects to treat the Plan and the Quanex
         Corporation Salaried Employees' Pension Plan as one plan for purposes
         of section 410(b) of the Code. The Sponsor will provide each Member or
         former Member who is subject to Section 6.19 a written explanation of:
         (a) the terms and conditions of the QPSA, (b) the Member's or former
         Member's right to waive the QPSA and the effect of the waiver, (c) the
         rights of the Member's or former Member's Spouse, and (d) the right to
         revoke a prior waiver and the effect of the revocation. This written
         explanation will be provided within the latest of the period (a)
         beginning on the first day of the Plan Year in which the Member or
         former Member attains age 32 and ending with the close of the Plan Year
         preceding the Plan Year in which the Member or former Member attains
         age 35, (b) ending one year after the individual becomes a Member, or
         (c) ending one year after the QPSA rules first become effective with
         respect to the Member or former Member.

         6.21 OPTIONAL FORMS OF DISTRIBUTION. On and after the date on which an
Employer elects to treat the Plan and the Quanex Corporation Salaried Employees'
Pension Plan as one plan for purposes of section 410(b) of the Code, all of the
optional forms of payment available under the Quanex Corporation Salaried
Employees' Pension Plan (as discussed more fully in Appendix C hereto) will be
available under the Plan.

         6.22 TIME OF DISTRIBUTIONS. Notwithstanding any other provision of the
Plan, all benefits payable under the Plan shall be distributed, or commence to
be distributed, in compliance with the following provisions:


                                      VI-9
<PAGE>   34

                  (a) DISTRIBUTION DEADLINES FOR MEMBERS OR FORMER MEMBERS WHO
         ARE 70 1/2 OR OLDER. If a Member or former Member attains 70 1/2, the
         Member or former Member must elect to receive the distribution required
         under section 401(a)(9) of the Code in one lump sum or in installments
         which must commence by his Required Beginning Date. If installments are
         elected, each installment paid must be equal to or greater than the
         minimum required distribution under section 401(a)(9) of the Code.

                  (b) DISTRIBUTION DEADLINE FOR DEATH BENEFITS. If a Member or
         former Member dies before the distribution of his Plan benefit has
         commenced, his entire interest shall be distributed within five years
         after his death. If a Member or former Member dies after the
         distribution of his Plan benefit has commenced, the remaining portion
         of his interest in the Plan, if any, will be distributed at least as
         rapidly as under the installment method of distribution selected by
         him.

                  (c) LIMITATIONS ON DEATH BENEFITS. Benefits payable under the
         Plan shall not be provided in any form that would cause a Member's
         death benefit to be more than incidental. Any distribution required to
         satisfy the incidental benefit requirement shall be considered a
         required distribution for purposes of section 401(a)(9) of the Code.

                  (d) COMPLIANCE WITH SECTION 401(a)(9). All distributions under
         the Plan will be made in accordance with the requirements of section
         401(a)(9) of the Code and all Regulations promulgated thereunder. The
         provisions of the Plan reflecting section 401(a)(9) of the Code
         override any distribution options in the Plan inconsistent with such
         Section.

                  (e) COMPLIANCE WITH SECTION 401(a)(14). Unless the Member or
         former Member otherwise elects, the payment of benefits under the Plan
         to the Member or former Member will begin not later than the 60th day
         after the close of the Plan Year in which occurs the latest of (a) the
         date on which the Member or former Member attains the later of age 62
         or Retirement Age, (b) the tenth anniversary of the year in which the
         Member or former Member commenced participation in the Plan, or (c) the
         Member's or former Member's Separation From Service.

         6.23 DESIGNATION OF BENEFICIARY. Each Member has the right to designate
and to revoke the designation of his Beneficiary or Beneficiaries. Each
designation or revocation must be evidenced by a written document in the form
required by the Committee, signed by the Member and filed with the Committee. If
no designation is on file at the time of a Member's death or if the Committee
determines that the designation is ineffective, the designated Beneficiary shall
be the Member's Spouse, if living, or if not, the executor, administrator or
other personal representative of the Member's estate.

         If a Member is considered to be married under local law, the Member's
designation of any Beneficiary, other than the Member's Spouse, shall not be
valid unless the spouse acknowledges in writing that she understands the effect
of the Member's beneficiary designation and consents to it. The consent must be
to a specific Beneficiary. The written acknowledgement and consent must be filed
with the Committee, signed by the Spouse and at least two witnesses, one of whom
must be a


                                     VI-10
<PAGE>   35

member of the Committee or a notary public. However, if the Spouse cannot be
located or there exist other circumstances as described in sections 401(a)(11)
and 417(a)(2) of the Code, the requirement of the Member's Spouse's
acknowledgement and consent may be waived. If a Beneficiary other than the
Member's Spouse is named, the designation shall become invalid if the Member is
later determined to be married under local law, the Member's missing Spouse is
located or the circumstances which resulted in the waiver of the requirement of
obtaining the consent of the Member's Spouse no longer exist.

         6.24 DISTRIBUTIONS TO DISABLED PERSONS. If the Committee determines
that any person to whom a payment is due is unable to care for his affairs
because of physical or mental disability, it shall have the authority to cause
the payments to be made to the Spouse, brother, sister or other person the
Committee determines to have incurred, or to be expected to incur, expenses for
that person unless a prior claim is made by a qualified guardian or other legal
representative. The Committee and the Trustee shall not be responsible to
oversee the application of those payments. Payments made pursuant to this power
shall be a complete discharge of all liability under the Plan and Trust and the
obligations of the Employer, the Trustee, the Trust Fund and the Committee.


                                     VI-11
<PAGE>   36

                                   ARTICLE VII

                           ADMINISTRATION OF THE PLAN


         7.01 APPOINTMENT, TERM OF SERVICE & REMOVAL. The Board of Directors
shall appoint a Committee to administer the Plan. The members shall serve until
their resignation, death or removal. Any member may resign at any time by
mailing a written resignation to the Board of Directors. Any member may be
removed by the Board of Directors, with or without cause. Vacancies may be
filled by the Board of Directors from time to time.

         7.02 POWERS. The Committee is a fiduciary. It has the exclusive
responsibility for the general administration of the Plan and Trust, and has all
powers necessary to accomplish that purpose, including but not limited to the
following rights, powers, and authorities:

                  (a) to make rules for administering the Plan and Trust so long
         as they are not inconsistent with the terms of the Plan;

                  (b) to construe all provisions of the Plan and Trust;

                  (c) to correct any defect, supply any omission, or reconcile
         any inconsistency which may appear in the Plan or Trust;

                  (d) to select, employ, and compensate at any time any
         consultants, actuaries, accountants, attorneys, and other agents and
         employees the Committee believes necessary or advisable for the proper
         administration of the Plan and Trust; any firm or person selected may
         be a disqualified person, but only if the requirements of section
         4975(d) of the Code have been met;

                  (e) to determine all questions relating to eligibility, Active
         Service, Compensation, allocations and all other matters relating to
         benefits or Members' entitlement to benefits;

                  (f) to determine all controversies relating to the
         administration of the Plan and Trust, including but not limited to any
         differences of opinion arising between an Employer and the Trustee or a
         Member, or any combination of them and any questions it believes
         advisable for the proper administration of the Plan and Trust;

                  (g) to direct or to appoint an investment manager or managers
         who can direct the Trustee in all matters relating to the investment,
         reinvestment and management of the Trust Fund;

                  (h) to direct the Trustee in all matters relating to the
         payment of Plan benefits; and

                  (i) to delegate any clerical or recordation duties of the
         Committee as the Committee believes is advisable to properly administer
         the Plan and Trust.


                                     VII-1
<PAGE>   37

The actions of the Committee in exercising all of the rights, powers, and
authorities set out in this Section and all other Sections of the Plan, when
performed in good faith and in its sole judgment, shall be final, conclusive and
binding on all parties.

         7.03 ORGANIZATION. The Committee may select, from among its members, a
chairman, and may select a secretary. The secretary need not be a member of the
Committee. The secretary shall keep all records, documents and data pertaining
to its administration of the Plan and Trust.

         7.04 QUORUM AND MAJORITY ACTION. A majority of the Committee
constitutes a quorum for the transaction of business. The vote of a majority of
the members present at any meeting shall decide any question brought before that
meeting. In addition, the Committee may decide any question by a vote, taken
without a meeting, of a majority of its members.

         7.05 SIGNATURES. The chairman, the secretary and any one or more of the
members of the Committee to which the Committee has delegated the power shall
each, severally, have the power to execute any document on behalf of the
Committee, and to execute any certificate or other written evidence of the
action of the Committee. The Trustee, after it is notified of any delegation of
power in writing, shall accept and may rely upon any document executed by the
appropriate member or members as representing the action of the Committee until
the Committee files a written revocation of that delegation of power with the
Trustee.

         7.06 DISQUALIFICATION OF COMMITTEE MEMBER. A member of the Committee
who is also a Member of the Plan shall not vote or act upon any matter relating
solely to himself.

         7.07 DISCLOSURE TO MEMBERS. The Committee shall make available to each
Member and Beneficiary for his examination those records, documents and other
data required under ERISA, but only at reasonable times during business hours.
No Member or Beneficiary has the right to examine any data or records reflecting
the compensation paid to any other Member or Beneficiary. The Committee is not
required to make any other data or records available other than those required
by ERISA.

         7.08 LIABILITY OF COMMITTEE AND LIABILITY INSURANCE. No member of the
Committee shall be liable for any act or omission of any other member of the
Committee, the Trustee, any investment manager appointed by the Committee or any
other agent appointed by the Committee unless required by the terms of ERISA or
another applicable state or federal law under which liability cannot be waived.
No member of the Committee shall be liable for any act or omission of his own
unless required by ERISA or another applicable state or federal law under which
liability cannot be waived.

         If the Committee directs the Trustee to do so, it may purchase out of
the Trust Fund insurance for the members of the Committee, for any other
fiduciaries appointed by the Committee and for the Trust Fund itself to cover
liability or losses occurring because of the act or omission of any one or more
of the members of the Committee or any other fiduciary appointed under the Plan.
But, that insurance must permit recourse by the insurer against the members of
the Committee or the other


                                     VII-2
<PAGE>   38

fiduciaries concerned if the loss is caused by breach of a fiduciary obligation
by one or more members of the Committee or other fiduciary.

         7.09 EXEMPTION FROM BOND. No member of the Committee is required to
give bond for the performance of his duties unless required by a law which
cannot be waived.

         7.10 COMPENSATION. The Committee shall serve without compensation but
shall be reimbursed by the Trust Fund for all expenses properly incurred in the
performance of its duties unless the Employer elects to pay those expenses.

         7.11 PERSONS SERVING IN DUAL FIDUCIARY ROLES. Any person, group of
persons, corporations, firm or other entity, may serve in more than one
fiduciary capacity with respect to the Plan, including serving as both Trustee
and as a member of the Committee.

         7.12 ADMINISTRATOR. For all purposes of ERISA, the administrator of the
Plan is the Sponsor. The administrator has the final responsibility for
compliance with all reporting and disclosure requirements imposed under all
applicable federal or state laws and regulations.


                                     VII-3
<PAGE>   39

                                  ARTICLE VIII

                          TRUST FUND AND CONTRIBUTIONS


         8.01 FUNDING OF PLAN. The Plan shall be funded by one or more separate
Trusts. If more than one Trust is used, each Trust shall be designated by the
name of the Plan followed by a number assigned by the Committee at the time the
Trust is established.

         8.02 INCORPORATION OF TRUST. Each Trust is a part of the Plan. All
rights or benefits which accrue to a person under the Plan shall be subject also
to the terms of the agreements creating the Trust or Trusts and any amendments
to them which are not in direct conflict with the Plan.

         8.03 AUTHORITY OF TRUSTEE. Each Trustee shall have full title and legal
ownership of the assets in the separate Trust which, from time to time, is in
his separate possession. No other Trustee shall have joint title to or joint
legal ownership of any asset in one of the other Trusts held by another Trustee.
Each Trustee shall be governed separately by the trust agreement entered into
between the Employer and that Trustee and the terms of the Plan without regard
to any other agreement entered into between any other Trustee and the Employer
as a part of the Plan.

         8.04 ALLOCATION OF RESPONSIBILITY. To the fullest extent permitted
under Section 405 of ERISA, the agreements entered into between the Employer and
each of the Trustees shall be interpreted to allocate to each Trustee its
specific responsibilities, obligations and duties so as to relieve all other
Trustees from liability either through the agreement, the Plan or ERISA, for any
act of any other Trustee which results in a loss to the Plan because of his act
or failure to act.


                                     VIII-1
<PAGE>   40

                                   ARTICLE IX

                       ADOPTION OF PLAN BY OTHER EMPLOYERS


         9.01 ADOPTION PROCEDURE. Any business organization may, with the
approval of the Board of Directors, adopt the Plan by:

                  (a) a certified resolution or consent of the board of
         directors of the adopting Employer or an executed adoption instrument
         (approved by the board of directors of the adopting Employer) agreeing
         to be bound as an Employer by all the terms, conditions and limitations
         of the Plan except those, if any, specifically described in the
         adoption instrument; and

                  (b) providing all information required by the Committee and
         the Trustee.

         9.02 NO JOINT VENTURE IMPLIED. The document which evidences the
adoption of the Plan by an Employer shall become a part of the Plan. However,
neither the adoption of the Plan and its related Trust Fund by an Employer nor
any act performed by it in relation to the Plan and its related Trust Fund shall
ever create a joint venture or partnership relation between it and any other
Employer.

         9.03 ALL TRUST ASSETS AVAILABLE TO PAY ALL BENEFITS. The Accounts of
Members employed by the Employers which adopt the Plan shall be commingled for
investment purposes. All assets in the Trust Fund shall be available to pay
benefits to all Members employed by any Employer.

         9.04 QUALIFICATION A CONDITION PRECEDENT TO ADOPTION AND CONTINUED
PARTICIPATION. The adoption of the Plan and the Trust or Trusts used to fund the
Plan by a business organization is contingent upon and subject to the express
condition precedent that the initial adoption meets all statutory and regulatory
requirements for qualification of the Plan and the exemption of the Trust or
Trusts and that the Plan and the Trust or Trusts that are applicable to it
continue in operation to maintain their qualified and exempt status. In the
event the adoption fails to initially qualify, the adoption shall fail
retroactively for failure to meet the condition precedent and the portion of the
Trust Fund applicable to the adoption shall be immediately returned to the
adopting business organization and the adoption shall be void ab initio. In the
event the adoption as to a given business organization later becomes
disqualified and loses its exemption for any reason, the adoption shall fail
retroactively for failure to meet the condition precedent and the portion of the
Trust Fund allocable to the adoption by that business organization shall be
immediately spun off, retroactively as of the last date for which the Plan
qualified, to a separate Trust for its sole benefit and an identical but
separate Plan shall be created, retroactively effective as of the last date the
Plan as adopted by that business organization qualified, for the benefit of the
Members covered by that adoption.


                                      IX-2
<PAGE>   41

                                    ARTICLE X

                            AMENDMENT AND TERMINATION


         10.01 RIGHT TO AMEND AND LIMITATIONS THEREON. The Sponsor has the sole
right to amend the Plan. An amendment may be made by a certified resolution or
consent of the Board of Directors, or by an instrument in writing executed by
the appropriate officer of the Sponsor. The amendment must describe the nature
of the amendment and its effective date. No amendment shall:

                  (a) vest in an Employer any interest in the Trust Fund;

                  (b) cause or permit the Trust Fund to be diverted to any
         purpose other than the exclusive benefit of the present or future
         Members and their Beneficiaries except under the circumstances
         described in Section 4.10;

                  (c) decrease the Account of any Employee, or eliminate an
         optional form of payment in violation of section 411(d)(6) of the Code;

                  (d) increase substantially the duties or liabilities of the
         Trustee without its written consent; or

                  (e) change the vesting schedule to one which would result in
         the nonforfeitable percentage of a Member's Account (determined as of
         the later of the date of the adoption of the amendment or of the
         effective date of the amendment) of any Member being less than the
         nonforfeitable percentage computed under the Plan without regard to the
         amendment. If the Plan's vesting schedule is amended, if the Plan is
         amended in any other way that affects the computation of the Member's
         nonforfeitable percentage, or if the Plan is deemed amended by an
         automatic change to or from a Top-Heavy vesting schedule, each Member
         with at least three years of Active Service as of the date of the
         amendment or change shall have his nonforfeitable percentage computed
         under the Plan without regard to the amendment or the change if that
         results in a higher nonforfeitable percentage.

         Each Employer shall be deemed to have adopted any amendment made by the
Sponsor unless the Employer notifies the Committee of its rejection in writing
within 30 days after it receives a copy of the amendment. A rejection shall
constitute a withdrawal from the Plan by that Employer unless the Sponsor
acquiesces in the rejection.

         10.02 MANDATORY AMENDMENTS. The Contributions of each Employer to the
Plan are intended to be:

                  (a) deductible under the applicable provisions of the Code;

                  (b) except as otherwise prescribed by applicable law, exempt
         from the Federal Social Security Act;


                                      X-1
<PAGE>   42

                  (c) except as otherwise prescribed by applicable law, exempt
         from withholding under the Code; and

                  (d) excludable from any Employee's regular rate of pay, as
         that term is defined under the Fair Labor Standards Act of 1938, as
         amended.

         The Sponsor shall make any amendment necessary to carry out this
intention, and it may be made retroactively.

         10.03 WITHDRAWAL OF EMPLOYER. An Employer may withdraw from the Plan
and its related Trust Fund if the Sponsor does not acquiesce in its rejection of
an amendment or by giving written notice of its intent to withdraw to the
Committee. The Committee shall then determine the portion of the Trust Fund that
is attributable to the Members employed by the withdrawing Employer and shall
notify the Trustee to segregate and transfer those assets to the successor
Trustee or Trustees when it receives a designation of the successor from the
withdrawing Employer.

         A withdrawal shall not terminate the Plan and its related Trust Fund
with respect to the withdrawing Employer, if the Employer either appoints a
successor Trustee or Trustees and reaffirms the Plan and its related Trust Fund
as its new and separate plan and trust intended to qualify under section 401(a)
of the Code, or establishes another plan and trust intended to qualify under
section 401(a) of the Code.

         The determination of the Committee, in its sole discretion, of the
portion of the Trust Fund that is attributable to the Members employed by the
withdrawing Employer shall be final and binding upon all parties; and, the
Trustee's transfer of those assets to the designated successor Trustee shall
relieve the Trustee of any further obligation, liability or duty to the
withdrawing Employer, the Members employed by that Employer and their
Beneficiaries, and the successor Trustee or Trustees.

         10.04 TERMINATION OF PLAN. The Sponsor may terminate the Plan and its
related Trust Fund with respect to all Employers by executing and delivering to
the Committee and the Trustee, a notice of termination, specifying the date of
termination.

         10.05 PARTIAL OR COMPLETE TERMINATION OR COMPLETE DISCONTINUANCE OF
CONTRIBUTIONS. Without regard to any other provision of the Plan, if there is a
partial or total termination of the Plan or there is a complete discontinuance
of the Employer's Contributions, each of the affected Members shall immediately
become 100 percent vested in his Account as of the end of the last Plan Year for
which a substantial Employer Contribution was made and in any amounts later
allocated to his Account. If the Employer then resumes making substantial
Contributions at any time, the appropriate vesting schedule shall again apply to
all amounts allocated to each affected Member's Account beginning with the Plan
Year for which they were resumed.

         10.06 CONTINUANCE PERMITTED UPON SALE OR TRANSFER OF ASSETS. An
Employer's participation in the Plan and its related Trust Fund shall not
automatically terminate if it consolidates or merges and is not the surviving
corporation, sells substantially all of its assets, is a party to a
reorganization and its Employees and substantially all of its assets are
transferred to another entity, liquidates, or dissolves, if there is a successor
organization. Instead, the successor may assume and


                                      X-2
<PAGE>   43

continue the Plan and its related Trust Fund by executing a direction, entering
into a contractual commitment or adopting a resolution providing for the
continuance of the Plan and its related Trust Fund. Only upon the successor's
rejection of the Plan and its related Trust Fund or its failure to respond to
the Employer's, the Sponsor's or the Trustee's request that it affirm its
assumption of the Plan within 90 days of the request shall the Plan
automatically terminate. In that event, the appropriate portion of the Trust
Fund shall be distributed exclusively to the Members or their Beneficiaries as
soon as possible. If there is a disposition to an unrelated entity of
substantially all of the assets used by the Employer in a trade or business or a
disposition by the Employer of its interest in a subsidiary, the Employer may
make a lump sum distribution from the Plan if it continues the Plan after the
disposition; but the distribution can only be made for those Members who
continue employment with the acquiring entity.


                                      X-3
<PAGE>   44

                                   ARTICLE XI

                                  MISCELLANEOUS


         11.01 PLAN NOT AN EMPLOYMENT CONTRACT. The adoption and maintenance of
the Plan and its related Trust Fund is not a contract between any Employer and
its Employees which gives any Employee the right to be retained in its
employment. Likewise, it is not intended to interfere with the rights of any
Employer to discharge any Employee at any time or to interfere with the
Employee's right to terminate his employment at any time.

         11.02 BENEFITS PROVIDED SOLELY FROM TRUST. All benefits payable under
the Plan shall be paid or provided for solely from the Trust Fund. No Employer
assumes any liability or responsibility to pay any benefit provided by the Plan.

         11.03 ASSIGNMENTS PROHIBITED. No principal or income payable or to
become payable from the Trust Fund shall be subject: to anticipation or
assignment by a Member or by a Beneficiary to attachment by, interference with,
or control of any creditor of a Member or Beneficiary, or to being taken or
reached by any legal or equitable process in satisfaction of any debt or
liability of a Member or Beneficiary prior to its actual receipt by the Member
or Beneficiary. Any attempted conveyance, transfer, assignment, mortgage,
pledge, or encumbrance of the Trust Fund, any part of it, or any interest in it
by a Member or Beneficiary prior to distribution shall be void, whether that
conveyance, transfer, assignment, mortgage, pledge, or encumbrance is intended
to take place or become effective before or after any distribution of Trust
assets or the termination of this Trust Fund itself. The Trustee shall never
under any circumstances be required to recognize any conveyance, transfer,
assignment, mortgage, pledge or encumbrance by a Member or Beneficiary of the
Trust Fund, any part of it, or any interest in it, or to pay any money or thing
of value to any creditor or assignee of a Member or Beneficiary for any cause
whatsoever. These prohibitions against the alienation of a Member's Account
shall not apply to Qualified Domestic Relations Orders.

         11.04 REQUIREMENTS UPON MERGER OR CONSIDERATION OF PLANS. The Plan
shall not merge or consolidate with or transfer any assets or liabilities to any
other plan unless each Member would (if the Plan then terminated) receive a
benefit immediately after the merger, consolidation, or transfer which is equal
to or greater than the benefit he would have been entitled to receive
immediately before the merger, consolidation, or transfer (if the Plan had then
terminated).

         11.05 GENDER OF WORDS USED. If the context requires it, words of one
gender when used in the Plan shall include the other gender, and words used in
the singular or plural shall include the other.

         11.06 SEVERABILITY. Each provision of this Agreement may be severed. If
any provision is determined to be invalid or unenforceable, that determination
shall not affect the validity or enforceability of any other provision.


                                      XI-1
<PAGE>   45

         11.07 REEMPLOYED VETERANS. The requirements of the Uniformed Services
Employment and Reemployment Rights Act of 1994 will be complied with in the
operation of the Plan in the manner permitted under section 414(u) of the Code.

         11.08 GOVERNING LAW. The provisions of the Plan shall be construed,
administered, and governed under the laws of the State of Texas and, to the
extent applicable, by the laws of the United States.


                                      XI-2
<PAGE>   46

         IN WITNESS WHEREOF, Piper Impact, Inc. has caused this Agreement to be
executed this day of July 1998, in multiple counterparts, each of which shall be
deemed to be an original, to be effective the 1st day of January 1998, except
for those provisions which have an earlier effective date provided by law, or as
otherwise provided under applicable provisions of the Plan.

                                        PIPER IMPACT, INC.


                                        By
                                          --------------------------

                                        ----------------------------
                                                      Title


                                      XI-3
<PAGE>   47

                                   APPENDIX A

                          LIMITATIONS ON CONTRIBUTIONS

                               PART A. DEFINITIONS

         DEFINITIONS. As used herein the following words and phrases have the
meaning attributed to them below:

                  (a) "ACTUAL CONTRIBUTION RATIO" means the ratio of Section
         401(m) Contributions actually paid into the Trust on behalf of an
         Employee for a Plan Year to the Employee's Annual Compensation for the
         same Plan Year. For this purpose, effective for Plan Years starting on
         or after January 1, 1998, Annual Compensation for any portion of the
         Plan Year in which the Employee was not an eligible Employee (as
         defined in Section 2.1 of Appendix A) will not be taken into account.

                  (b) "ACTUAL DEFERRAL PERCENTAGE" means, for a specified group
         of Employees for a Plan Year, the average of the ratios (calculated
         separately for each Employee in the group) of the amount of Section
         401(k) Contributions actually paid into the Trust on behalf of the
         Employee for the Plan Year to the Employee's Annual Compensation for
         the Plan Year.

                  (c) "ACTUAL DEFERRAL RATIO" means the ratio of Section 401(k)
         Contributions actually paid into the Trust on behalf of an Employee for
         a Plan Year to the Employee's Annual Compensation for the same Plan
         Year. For this purpose, effective for Plan Years starting on or after
         January 1, 1998, Annual Compensation for any portion of the Plan Year
         in which the Employee was not an eligible Employee (as defined in
         Section 2.1 of Appendix A) will not be taken into account.

                  (d) "ANNUAL ADDITIONS" means the sum of the following amounts
         credited on behalf of a Member for the Limitation Year: (a) Employer
         contributions, (b) Employee contributions and (c) forfeitures. Excess
         401(k) Contributions for a Plan Year are treated as Annual Additions
         for that Plan Year even if they are corrected through distribution.
         Excess Deferrals that are timely distributed as set forth in Section
         3.2 of Appendix A will not be treated as Annual Additions.

                  (e) "CONTRIBUTION PERCENTAGE" means, for a specified group of
         Employees for a Plan Year, the average of the ratios (calculated
         separately for each Employee in the group) of the amount of Section
         401(m) Contributions actually paid into the Trust on behalf of the
         Employee for the Plan Year to the Employee's Annual Compensation for
         the Plan Year.

                  (f) "EXCESS 401(k) CONTRIBUTIONS" means, with respect to any
         Plan Year, the excess of (a) the aggregate amount of Section 401(k)
         Contributions actually paid to the Trustee on behalf of Highly
         Compensated Employees for the Plan Year over (b) the maximum amount of
         those contributions permitted under the limitations set out in the
         first sentence of Section 2.1 of Appendix A.

                  (g) "EXCESS AGGREGATE 401(m) CONTRIBUTIONS" means, with
         respect to any Plan Year, the excess of (a) the aggregate amount of
         Section 401(m) Contributions actually paid to the Trustee on behalf of
         Highly Compensated Employees for the Plan Year over (b) the maximum
         amount of those contributions permitted under the limitations set out
         in the first sentence of Section 2.2 of Appendix A.

                  (h) "LIMITATION YEAR" means the calendar year.

                  (i) "SECTION 401(k) CONTRIBUTIONS" means the sum of Salary
         Deferral Contributions made on behalf of the Member during the Plan
         Year, Matching Contributions (to the extent that the Matching
         contributions are not used to enable the Plan to satisfy the minimum
         contribution requirements of section 416 of the Code) and Qualified
         Nonelective Employer Contributions that the Employer elects to have
         treated as section 401(k) Contributions pursuant to section
         401(k)(3)(d)(ii) of the Code.


                                      -1-
<PAGE>   48

                  (j) "SECTION 401(m) CONTRIBUTIONS" means the sum of Matching
         Contributions and After-Tax Contributions made on behalf of the Member
         during the Plan Year and other amounts that the Employer elects to have
         treated as Section 401(m) Contributions pursuant to section
         401(m)(3)(B) of the Code. However, Matching Contributions and Salary
         Deferral Contributions that the Employer could otherwise elect to have
         treated as Section 401(m) Contributions are not Section 401(m)
         Contributions to the extent that they are used to enable the Plan to
         satisfy the minimum contribution requirements of section 416 of the
         Code.

             PART B. SUMMARY OF SECTIONS 415 AND 402(g) LIMITATIONS

         1.1 SECTION 415 LIMITATION ON TOTAL ALLOCATIONS. The Annual Additions
that may be credited to an individual Member's Accounts under this Plan and any
other qualified defined contribution plan maintained by an Affiliated Employer
for a Limitation Year shall not exceed the lesser of (a) $30,000.00 (as adjusted
by the Secretary of Treasury), or (b) 25 percent of the Member's Annual
Compensation for the Limitation Year. If the Limitation Year is ever less than
12 months, the $30,000.00 limitation (as adjusted by the Secretary of Treasury)
will be prorated by multiplying the limitation by a fraction, the numerator of
which is the number of months in the Limitation Year, and the denominator of
which is 12. The Plan will be operated in compliance with section 415 of the
Code and its Regulations, the terms of which are incorporated in this Plan.

         1.2 DOLLAR LIMITATION ON SALARY DEFERRAL CONTRIBUTIONS. The maximum
Salary Deferral Contribution that a Member may elect to have made on his behalf
during the Member's taxable year may not, when added to the amounts deferred on
a pre-tax basis under other plans or arrangements described in sections 401(k),
408(k), 403(b) and 408(p) of the Code exceed $7,000.00 (as adjusted by the
Secretary of Treasury). For purposes of applying the requirements of Section 2.1
of Appendix A and Appendix B, Excess Deferrals shall not be disregarded merely
because they are Excess Deferrals or because they are distributed in accordance
with Section 3.2 of Appendix A. However, Excess Deferrals made to the Plan on
behalf of Non-Highly Compensated Employees will not be taken into account under
Section 2.1 of Appendix A.

            PART C. SUMMARY OF SECTIONS 401(k) AND 401(m) LIMITATIONS

         2.1 LIMITATION BASED UPON ACTUAL DEFERRAL PERCENTAGE. The Actual
Deferral Percentage for Highly Compensated Employees for any Plan Year must bear
a relationship to the Actual Deferral Percentage for all other eligible
Employees for the same Plan Year which meets either of the following tests:

                  (a) the Actual Deferral Percentage of the Highly Compensated
         Employees is not more than the Actual Deferral Percentage of all other
         eligible Employees multiplied by 1.25; or

                  (b) the excess of the Actual Deferral Percentage of the Highly
         Compensated Employees over that of all other eligible Employees is not
         more than two percentage points, and the Actual Deferral Percentage of
         the Highly Compensated Employees is not more than the Actual Deferral
         Percentage of all other eligible Employees multiplied by two.

         For purposes of this test, an eligible Employee is an Employee who is
directly or indirectly eligible to make Salary Deferral Contributions for all or
part of the Plan Year. A person who is suspended from making Salary Deferral
Contributions because he has made a withdrawal is an eligible Employee. If no
Salary Deferral Contributions are made for an eligible Employee, the Actual
Deferral Ratio that shall be included for him in determining the Actual Deferral
Percentage is zero. If this Plan and any other plan or plans which include cash
or deferred arrangements are considered as one plan for purposes of section
401(a)(4) or 410(b) of the Code, the cash or deferred arrangements included in
this Plan and the other plans shall be treated as one plan for these tests. If
any Highly Compensated Employee is a Member of this Plan and any other cash or
deferred arrangements of the Employer, when determining the deferral percentage
of the Employee, all of the cash or deferred arrangements are treated as one. A
Salary Deferral Contribution will be taken into account under the Actual
Deferral Percentage test of Code section 401(k) and this Section for a Plan Year
only if it relates to Annual Compensation that either would have been received
by the Employee in the Plan Year (but for the deferral election) or is
attributable to services performed by the employee in the Plan Year and would
have been received by the Employee within 2 1/2 months after the close of the
Plan Year (but for the deferral election). In addition, a Section 401(k)
Contribution will be taken into account under the Actual Deferral Percentage
test of Code section 401(k)

                                      -2-
<PAGE>   49

and this Section for a Plan Year only if it is allocated to an Employee as of a
date within that Plan Year. For this purpose, a Section 401(k) Contribution is
considered allocated as of a date within a Plan Year if the allocation is not
contingent on participation or performance of services after that date and the
Section 401(k) Contribution is actually paid to the Trustee no later than 12
months after the Plan Year to which the Section 401(k) Contribution relates.
Failure to correct Excess 401(k) Contributions by the close of the Plan Year
following the Plan Year for which they were made will cause the Plan's cash or
deferred arrangement to be disqualified for the Plan Year for which the Excess
401(k) Contributions were made and for all subsequent years during which they
remain in the Plan Fund. Also, the Employer will be liable for a ten percent
excise tax on the amount of Excess 401(k) Contributions unless they are
corrected within 2 1/2 months after the close of the Plan Year for which they
were made.

         2.2 LIMITATION BASED UPON CONTRIBUTION PERCENTAGE. The Contribution
Percentage for eligible Highly Compensated Employees for any Plan Year must not
exceed the greater of the following:

                  (c) the Contribution Percentage for all other eligible
         Employees for the same Plan Year multiplied by 1.25; or

                  (d) the lesser of the Contribution Percentage for all other
         eligible Employees for the preceding Plan Year multiplied by two, or
         the Contribution Percentage for all other eligible Employees for the
         preceding Plan Year plus two percentage points.

         For purposes of this test, an eligible Employee is an Employee who is
directly or indirectly eligible to make After-Tax Contributions or to receive an
allocation of Matching Contributions under the Plan for all or part of the Plan
Year. A person who is suspended from making After-Tax Contributions because he
has made a withdrawal, a person who would be eligible to receive an allocation
of Matching Contributions but for his election not to participate and a person
who would be eligible to receive an allocation of Matching Contributions but for
the limitation on his Annual Additions imposed by section 415 of the Code are
all eligible Employees. If no Section 401(m) Contributions are made on behalf of
an eligible Employee, the Actual Contribution Ratio that shall be included for
him in determining the Contribution Percentage is zero. If this Plan and any
other plan or plans to which Section 401(m) Contributions are made are
considered as one plan for purposes of section 401(a)(4) or 410(b) of the Code,
this Plan and those plans are to be treated as one. The Actual Contribution
Ratio of a Highly Compensated Employee who is eligible to participate in more
than one plan of an Affiliated Employer to which employee or matching
contributions are made is calculated by treating all the plans in which the
Employee is eligible to participate as one plan. However, plans that are not
permitted to be aggregated under Regulation section 1.410(m)-1(b)(3)(ii) are not
aggregated for this purpose. A Matching Contribution will be taken into account
under this Section 2.2 of Appendix A for a Plan Year only if (a) it is allocated
to the Employee's Account as of a date within the Plan Year, (b) it is paid to
the Trustee no later than the end of the 12-month period beginning after the
close of the Plan Year, and (c) it is made on behalf of an Employee on account
of his Salary Deferral Contributions for the Plan Year. At the election of the
Employer, a Member's Salary Deferral Contributions and Qualified Nonelective
Employer Contributions made on behalf of the Member during the Plan Year shall
be treated as Section 401(m) Contributions that are Matching Contributions
provided that the conditions set forth in Regulation section 1.401(m)-1(b)(5)
are satisfied. Salary Deferral Contributions may not be treated as Matching
Contributions for purposes of the Contribution Percentage test unless the
contributions, including those taken into account for purposes of the test,
satisfy the Actual Deferral Percentage test set forth in Section 2.1 of Appendix
A. Salary Deferral Contributions and Qualified Nonelective Employer
Contributions may not be taken into account for purposes of the test to the
extent that those contributions are taken into account in determining whether
any other contributions satisfy the Actual Deferral Percentage test set forth in
Section 2.1 of Appendix A. Finally, Salary Deferral Contributions and Qualified
Nonelective Employer Contributions may be taken into account for purposes of the
test only if they are allocated to the Employee's Account as of a date within
the Plan Year being tested within the meaning of Regulation section
1.401(k)-1(b)(4). Failure to correct Excess Aggregate 401(m) Contributions by
the close of the Plan Year following the Plan Year for which they were made will
cause the Plan to fail to be qualified for the Plan Year for which the Excess
Aggregate 401(m) Contributions were made and for all subsequent years during
which they remain in the Plan Fund. Also, the Employer will be liable for a ten
percent excise tax on the amount of Excess Aggregate 401(m) Contributions unless
they are corrected within 2 1/2 months after the close of the Plan Year for
which they were made.

         2.3 ALTERNATIVE LIMITATION BASED UPON ACTUAL DEFERRAL PERCENTAGE AND
CONTRIBUTION PERCENTAGE. If the second alternative permitted in Sections 2.1 and
2.2 of Appendix A is used for both the Actual Deferral Percentage test and the
Contribution Percentage test, the following additional limitation on Salary
Deferral Contributions shall apply.


                                      -3-
<PAGE>   50

The Actual Deferral Percentage plus the Contribution Percentage of the eligible
Highly Compensated Employees cannot exceed the greater of (a) or (b), where:

                  (a) is the sum of:

                           (i) 1.25 times the greater of the Actual Deferral
                  Percentage or the Contribution Percentage of the eligible
                  Non-Highly Compensated Employees for the preceding Plan Year,
                  and

                           (ii) the lesser of (x) two percentage points plus the
                  lesser of the Actual Deferral Percentage or the Contribution
                  Percentage of the eligible Non-Highly Compensated Employees
                  for the preceding Plan Year or (y) two times the lesser of the
                  Actual Deferral Percentage or the Contribution Percentage of
                  the group of eligible Non-Highly Compensated Employees for the
                  preceding Plan Year, and

                  (b) is the sum of:

                           (i) 1.25 times the lesser of the Actual Deferral
                  Percentage or the Contribution Percentage of the eligible
                  Non-Highly Compensated Employees for the preceding Plan Year,
                  and

                           (ii) the lesser of (x) two percentage points plus the
                  greater of the Actual Deferral Percentage or the Contribution
                  Percentage of the eligible Non-Highly Compensated Employees
                  for the preceding Plan Year or (y) two times the greater of
                  the Actual Deferral Percentage or the Contribution Percentage
                  of the group of eligible Non-Highly Compensated Employees for
                  the preceding Plan Year.

            PART D. CORRECTION PROCEDURES FOR ERRONEOUS CONTRIBUTIONS

         3.1 CORRECTION OF EXCESS ANNUAL ADDITIONS. If Annual Additions are made
in excess of the limitations contained in Section 1.1 of Appendix A, to the
maximum extent permitted by law, those excess Annual Additions shall be
attributed to the Plan. If an excess Annual Addition attributed to the Plan is
held or contributed as a result of the allocation of forfeitures, reasonable
error in estimating a Member's Annual Compensation, reasonable error in
calculating the maximum Salary Deferral Contribution that may be made for a
Member under section 415 of the Code or because of other facts and circumstances
which the Commissioner of Internal Revenue finds to be justified, the excess
Annual Addition shall be corrected as follows:

                  (a) first, the excess Annual Addition shall be reduced to the
         extent necessary by distributing to the Member all Salary Deferral
         Contributions together with their earnings. These distributed amounts
         are disregarded for purposes of the testing and limitations contained
         in this Appendix A;

                  (b) second, if the Member is still employed by the Employer at
         the end of the Plan Year, any remaining excess funds shall be placed in
         an unallocated suspense account to be applied to reduce future Employer
         Contributions for that Member for as many Plan Years as are necessary
         to exhaust the suspense account in keeping with the amounts which would
         otherwise be allocated to that Member's Account; and

                  (c) third, if the Member is not employed by the Employer at
         the end of the Plan Year, the remaining excess funds shall be placed in
         an unallocated suspense account to reduce future Employer Contributions
         for all remaining Members for as many Plan Years as are necessary to
         exhaust the suspense account.

                  (d) If the Plan terminates prior to the exhaustion of the
         suspense account, the remaining amount shall revert to the Employer.

         3.2 EXCESS DEFERRAL FAIL SAFE. As soon as practical after the close of
each Plan Year, the Committee shall determine if there would be any Excess
Deferrals. If there would be an Excess Deferral by a Member, the Excess Deferral
as adjusted by any earnings or losses, will be distributed to the Member no
later than April 15 following the Member's taxable year in which the Excess
Deferral was made. The income allocable to the Excess Deferrals for the


                                      -4-
<PAGE>   51

taxable year of the Member shall be determined by multiplying the income for the
taxable year of the Member allocable to Salary Deferral Contributions by a
fraction. The numerator of the fraction is the amount of the Excess Deferrals
made on behalf of the Member for the taxable year. The denominator of the
fraction is the Member's total Salary Deferral Account balance as of the
beginning of the taxable year plus the Member's Salary Deferral Contributions
for the taxable year.

         3.3 ACTUAL DEFERRAL PERCENTAGE FAIL SAFE. As soon as practicable after
the close of each Plan Year, the Committee shall determine whether the Actual
Deferral Percentage for the Highly Compensated Employees would exceed the
limitation set forth in Section 2.1 of Appendix A. If the limitation would be
exceeded for a Plan Year, before the close of the following Plan Year (a) the
amount of Excess 401(k) Contributions for that Plan Year (and any income
allocable to those Contributions as calculated in the specific manner required
by Section 3.6 of Appendix A) shall be distributed, or (b) the Employer may make
a Qualified Nonelective Employer Contribution which it elects to have treated as
a Section 401(k) Contribution. The amount of Excess 401(k) Contributions to be
distributed shall be that amount of the Salary Deferral Contributions by or on
behalf of those Highly Compensated Employees with the largest Salary Deferral
Contributions as is equal to the Excess 401(k) Contributions, taken ratably from
each Account, based solely on those Salary Deferral Contributions for the Plan
Year. This initial distribution shall not reduce those Accounts affected below
the next highest level of Salary Deferral Contributions. If any further
reduction is necessary, the same process is to be repeated at the next highest
level of Salary Deferral Contributions by or on behalf of the Highly Compensated
Employees, and if necessary repeated in successively lower levels of Salary
Deferral Contributions until the cash or deferred arrangement satisfies the
Actual Deferral Percentage test. Qualified Nonelective Employer Contributions
shall be treated as Section 401(k) Contributions only if: (a) the conditions
described in Regulation section 1.401(k)- 1(b)(5) are satisfied and (b) they are
allocated to Members' Accounts as of a date within that Plan Year and are
actually paid to the Trustee no later than the end of the 12-month period
immediately following the Plan Year to which the contributions relate. If the
Employer makes a Qualified Nonelective Employer Contribution that it elects to
have treated as a Section 401(k) Contribution, the Contribution will be in an
amount necessary to satisfy the Actual Deferral Percentage test and will be
allocated first to those Non-Highly Compensated Employees who had the lowest
Actual Deferral Ratios. Any distributions of the Excess 401(k) Contributions for
any Plan Year are to be made to Highly Compensated Employees on the basis of the
amount of contributions by or on behalf of each Highly Compensated Employee. The
amount of Excess 401(k) Contributions to be distributed for any Plan Year must
be reduced by any excess Salary Deferral Contributions previously distributed
for the taxable year ending in the same Plan Year.

         3.4 CONTRIBUTION PERCENTAGE FAIL SAFE. If the limitation set forth in
Section 2.1 or 2.2 of Appendix A would be exceeded for any Plan Year, before the
close of the following Plan Year any one or more of the following corrective
actions shall be taken, as determined by the Committee in its sole discretion:
(a) the amount of the Excess Aggregate 401(m) Contributions for that Plan Year
(and any income allocable to those Contributions as calculated in the specific
manner required by Section 3.6 of Appendix A) shall be distributed, or (b) the
Employer may make a Qualified Nonelective Employer Contribution which it elects
to have treated as a Section 401(m) Contribution. Any distributions of the
Excess Aggregate 401(m) Contributions for any Plan Year are to be made to Highly
Compensated Employees on the basis of the amount of Section 401(m) Contributions
made to the Plan by or on their behalf determined under the leveling procedure
described in Section 3.3 of Appendix A.

         3.5 ALTERNATIVE LIMITATION FAIL SAFE. As soon as practicable after the
close of each Plan Year, the Committee shall determine whether the alternative
limitation would be exceeded. If the limitation would be exceeded for any Plan
Year, before the close of the following Plan Year the Actual Deferral Percentage
or Contribution Percentage of the eligible Highly Compensated Employees, or a
combination of both, shall be reduced by distributions made in the manner
described in the Regulations. These distributions shall be in addition to and
not in lieu of distributions required for Excess 401(k) Contributions and Excess
Aggregate 401(m) Contributions.

         3.6 INCOME ALLOCABLE TO EXCESS 401(k) AND EXCESS AGGREGATE 401(m)
CONTRIBUTIONS. The income allocable to Excess 401(k) Contributions for any
Member for the Plan Year shall be determined by multiplying the income for the
Plan Year allocable to Section 401(k) Contributions by a fraction. The numerator
of the fraction is the amount of Excess 401(k) Contributions made on behalf of
the Member for the Plan Year. The denominator of the fraction is the Member's
total Account balance attributable to Section 401(k) Contributions as of the
beginning of the Plan Year plus the Member's Section 401(k) Contributions for
the Plan Year. The income allocable to Excess Aggregate 401(m) Contributions for
a Plan Year shall be determined by multiplying the income for the Plan Year
allocable to Section 401(m) Contributions by a fraction. The numerator of the
fraction is the amount of Excess Aggregate 401(m)


                                      -5-
<PAGE>   52

Contributions made on behalf of the Member for the Plan Year. The denominator of
the fraction is the Member's total Account balance attributable to Section
401(m) Contributions as of the beginning of the Plan Year plus the Member's
Section 401(m) Contributions for the Plan Year.


                                      -6-
<PAGE>   53

                                   APPENDIX B

                             TOP-HEAVY REQUIREMENTS

         DEFINITIONS. As used herein, the following words and phrases have the
meaning attributed to them below:

         (a) "AGGREGATE ACCOUNTS" means the total of all Account balances
derived from Employer Contributions and Rollover Contributions.

         (b) "AGGREGATION GROUP" means (a) each plan of the Employer or any
Affiliated Employer in which a Key Employee is a Member and (b) each other plan
of the Employer or any Affiliated Employer which enables any plan in (a) to meet
the requirements of either section 401(a)(4) or 410 of the Code. Any Employer
may treat a plan not required to be included in the Aggregation Group as being a
part of the group if the group would continue to meet the requirements of
section 401(a)(4) and 410 of the Code with that plan being taken into account.

         (c) "DETERMINATION DATE" means for a given Plan Year the last day of
the preceding Plan Year or in the case of the first Plan Year the last day of
that Plan Year.

         (d) "KEY EMPLOYEE" means an Employee or former or deceased Employee or
Beneficiary of an Employee who at any time during the Plan Year or any of the
four preceding Plan Years is (a) an officer of an Employer or any Affiliated
Employer having Annual Compensation greater than 50 percent of the annual
addition limitation of section 415(b)(1)(A) of the Code for the Plan Year, (b)
one of the ten employees having Annual Compensation from an Employer or any
Affiliated Employer of greater than 100 percent of the annual addition
limitation of Section 415(c)(1)(A) of the Code for the Plan Year and owning or
considered as owning (within the meaning of Section 318 of the Code) the largest
interest in an Employer or any Affiliated Employer, treated separately, (c) a
Five Percent Owner of an Employer or any Affiliated Employer, treated
separately, or (d) a one percent owner of an Employer or any Affiliated
Employer, treated separately, having Annual Compensation from an Employer or any
Affiliated Employer of more than $150,000.00. For this purpose no more than 50
employees or, if lesser, the greater of three employees or ten percent of the
employees shall be treated as officers. Section 416(i) of the Code shall be used
to determine percentage of ownership. For the purpose of the test set out in (b)
above, if two or more employees have the same interest in an Employer, the
employee with the greater Annual Compensation from the Employer shall be treated
as having the larger interest.

         (e) "NON-KEY EMPLOYEE" means any Employee who is not a Key Employee.

         (f) TOP-HEAVY PLAN" means any plan which has been determined to be
top-heavy under the test described in Appendix B of the Plan.

         1.1 APPLICATION. The requirements described in this Appendix B shall
apply to each Plan Year that the Plan is determined to be a Top-Heavy Plan .

         1.2 TOP-HEAVY TEST. If on the Determination Date the Aggregate Accounts
of Key Employees in the Plan exceed 60 percent of the Aggregate Accounts of all
Employees in the Plan, the Plan shall be a Top-Heavy Plan for that Plan Year. In
addition, if the Plan is required to be included in an Aggregation Group and
that group is a top-heavy group, this Plan shall be treated as a Top-Heavy Plan.
An Aggregation Group is a top-heavy group if on the Determination Date the sum
of (a) the present value of the cumulative accrued benefits for Key Employees
under all defined benefit plans in the Aggregation Group which contains the
Plan, plus (b) the total of all of the accounts of Key Employees under all
defined contribution plans included in the Aggregation Group (which contains the
Plan) is more than 60 percent of a similar sum determined for all employees
covered in the Aggregation Group which contains the Plan.

         In applying the above tests, the following rules shall apply:

         (a) in determining the present value of the accumulated accrued
benefits for any Employee or the amount in the account of any Employee, the
value or amount shall be increased by all distributions made to or for the
benefit of the Employee under the Plan during the five-year period ending on the
Determination Date;


                                      -1-
<PAGE>   54

         (b) all rollover contributions made after December 31, 1983 by the
Employee to the Plan shall not be considered by the Plan for either test;

         (c) if an Employee is a Non-Key Employee under the plan for the Plan
Year but was a Key Employee under the plan for another prior Plan Year, his
Account shall not be considered; and

         (d) benefits shall not be taken into account in determining the
top-heavy ratio for any Employee who has not performed services for the Employer
during the last five-year period ending upon the Determination Date.

         1.3 VESTING RESTRICTIONS IF PLAN BECOMES TOP-HEAVY. If a Member has at
least one Hour of Service during a Plan Year when the Plan is a Top-Heavy Plan,
he shall either vest under each of the normal vesting provisions of the Plan or
under the following vesting schedule, whichever is more favorable:

<TABLE>
<CAPTION>
                                                                                      Percentage of Amount Invested
                                                                                        In Accounts Containing
         Completed Years of Active Service                                              Employer Contributions
         ---------------------------------                                              ----------------------
<S>                                                                                   <C>
         Less than two years............................................................             0%
         Two years but less than three years............................................            20%
         Three years but less than four years...........................................            40%
         Four years but less than five years............................................            60%
         Five years but less than six years.............................................            80%
         Six years or more..............................................................           100%
</TABLE>

If the Plan ceases to be a Top-Heavy Plan, this requirement shall no longer
apply. After that date, the normal vesting provisions of the Plan shall be
applicable to all subsequent Contributions by the Employer.

         1.4 MINIMUM CONTRIBUTIONS IF PLAN BECOMES TOP-HEAVY. If the Plan is a
Top-Heavy Plan and the normal allocation of the Employer Contribution and
forfeitures is less than three percent of any Non-Key Employee Member's Annual
Compensation, the Committee, without regard to the normal allocation procedures,
shall allocate the Employer Contribution and the forfeitures among the Members
who are in the employ of the Employer at the end of the Plan Year in proportion
to each Member's Annual Compensation as compared to the total Annual
Compensation of all Members for that Plan Year until each Non-Key Employee
Member has had an amount equal to the lesser of (i) the highest rate of
Contribution applicable to any Key Employee, or (ii) three percent of his Annual
Compensation allocated to his Account. At that time, any more Employer
Contributions or forfeitures shall be allocated under the normal allocation
procedures described earlier in the Plan. Salary Deferral Contributions made on
behalf of Key Employees are included in determining the highest rate of Employer
Contributions. Salary Deferral Contributions made on behalf of Non-Key Employees
are not included for that purpose. Amounts that may be treated as Section 401(k)
Contributions made on behalf of Non-Key Employees may not be included in
determining the minimum contribution required under this Section to the extent
that they are treated as Section 401(k) Contributions for purposes of the Actual
Deferral Percentage test.

         In applying this restriction, the following rules shall apply:

         (a) Each Employee who is eligible for membership (without regard to
whether he has made mandatory contributions, if any are required, or whether his
compensation is less than a stated amount) shall be entitled to receive an
allocation under this Section; and

         (b) All defined contribution plans required to be included in the
Aggregation Group shall be treated as one plan for purposes of meeting the three
percent maximum; this required aggregation shall not apply if the Plan is also
required to be included in an Aggregation Group which includes a defined benefit
plan and the Plan enables that defined benefit plan to meet the requirements of
sections 401(a)(4) or 410 of the Code.

         1.5 COVERAGE UNDER MULTIPLE TOP-HEAVY PLANS. If the Plan is a Top-Heavy
Plan, it must meet the vesting and benefit requirements described in this
Article without taking into account contributions or benefits under


                                      -2-
<PAGE>   55

Chapter 2 of the Code (relating to tax on self-employment income), Chapter 21 of
the Code (relating to Federal Insurance Contributions Act), Title II of the
Social Security Act or any other federal or state law.

         If a Non-Key Employee is covered by both a Top-Heavy defined
contribution plan and a defined benefit plan, he shall receive the defined
benefit minimum, offset by the benefits provided under the defined contribution
plan.

         1.6 RESTRICTIONS IF PLAN BECOMES SUPER TOP-HEAVY. If the Plan is
determined to be a Top-Heavy Plan, the number "1.00" must be substituted for the
number "1.25" when applying the limitations of section 415 of the Code to the
Plan, unless the Plan would not be a Top-Heavy Plan if "90%" were substituted
for "60%" and the Employer Contribution for the Plan Year for each Non-Key
Employee, who is a Member, is not less than four percent of the Member's Annual
Compensation.


                                      -3-
<PAGE>   56


                                   APPENDIX C

                         OPTIONAL FORMS OF DISTRIBUTION

         Subject to Sections 6.16, 6.18 and 6.19 of the Plan, the optional forms
of distributions set forth below shall be available on and after the date on
which an Employer elects to treat the Plan and the Quanex Corporation Salaried
Employees' Pension Plan as one plan for purposes of section 410(b) of the Code:

         1.       OPTION A. A pension under which the Member or former Member
                  shall receive equal monthly payments for his lifetime.

         2.       OPTION B. A last survivor pension under which the Member or
                  former Member shall receive 85 percent of the monthly pension
                  benefit otherwise payable under Option A, and upon the death
                  of the Member or former Member, the Beneficiary shall receive
                  1/2 of the monthly pension benefit paid to the Member or
                  former Member prior to this death, provided however, that if
                  the Beneficiary is younger than the Member or former Member,
                  the 85 percent factor shall be reduced by one percent for each
                  full year's difference in the age of the Member or former
                  Member and the Beneficiary, and if the Beneficiary is older
                  than the Member or former Member, the 85 percent factor shall
                  be increased by one percent for each full years difference in
                  the age of the Member or former Member and the Beneficiary (up
                  to a maximum of 100 percent).

         3.       OPTION C. A last survivor pension under which the Member or
                  former Member shall receive 70 percent of the monthly pension
                  benefit otherwise payable under Option A, and upon the death
                  of the Member or former Member, the Beneficiary shall receive
                  a monthly pension benefit equal to that paid to the Member or
                  former Member.

         4.       OPTION D. A reduced monthly pension payable to the Member or
                  former Member during his lifetime, provided that, if the
                  Member or former Member dies prior to his receipt of an amount
                  equal to 120 monthly payments, the then-present value of the
                  remainder of such 120 monthly payments shall be payable to his
                  Beneficiary in a lump sum. If the former Member dies prior to
                  his receipt of all of such 120 payments without having
                  designated a Beneficiary, of if the Beneficiary predeceases
                  the former Member, the then-present value of any remaining
                  payments shall be paid in a lump sum to the former Member's
                  estate. If the designated Beneficiary dies after the former
                  Member and before all of such 120 monthly payments have been
                  made, the then-present value of the unpaid balance of such
                  payments shall be paid in a lump sum to the Beneficiary's
                  estate.

         5.       LIMITATIONS ON OPTIONS B, C AND D.

                  (a)      Options A, B and C will not be available to any
                           member if the reduced pension is less than $10 per
                           month.

                  (b)      Except as otherwise provided elsewhere in the Plan,
                           any election shall be automatically revoked if either
                           the Member or former Member or Beneficiary dies
                           before the Member's or former Member's Annuity
                           Starting Date.

                  (c)      Where the Beneficiary is a person other than the
                           Member's or former Member's Spouse, the Beneficiary
                           under either Option B or Option C must be of such age
                           and sex that the amount payable to the Member or
                           former Member will exceed 50 percent of the amount
                           that would otherwise be payable if the Member or
                           former Member had elected a life annuity for his
                           life.

                  No pension can exceed the life of the Member or former Member
                  or the life of the Member or former Member and his designated
                  Beneficiary, or in the case of a period certain, the life
                  expectancy of the Member or former Member or the life
                  expectancy of the Member or former Member and his designated
                  Beneficiary.


                                       -1-

<PAGE>   1
                                                                     EXHIBIT 4.7


                               FIRST AMENDMENT TO
                          THE PIPER IMPACT 401(K) PLAN



     THIS AGREEMENT by Piper Impact,Inc., a Delaware corporation, (the
"Sponsor"),

                                  WITNESSETH:

     WHEREAS, on July 13, 1998, the Sponsor executed the amendment and
restatement of the plan agreement known as the "Piper Impact 401(k) Plan" (the
"Plan"); and


     WHEREAS, the Sponsor retained the right in Section 10.01 of the Plan to
amend the Plan from time to time; and

     WHEREAS, the directors of the Sponsor have approved resolutions to amend
the Plan;

     NOW, THEREFORE, the Sponsor agrees as follows:

     (1)  Effective January 1, 1999, Section 4.03 of the Plan is amended in its
          entirety to provide as follows:

               4.03 SUPPLEMENTAL CONTRIBUTIONS. The Employer may contribute for
          any Plan Year a Supplemental Contribution for its Employees who are on
          its payroll for its Utah plant in such amount, if any, as shall be
          determined by the Employer. The Employer may contribute for any Plan
          Year a Supplemental Contribution for its Employees who are on its
          payroll for its Mississippi plant in such amount, if any, as shall be
          determined by its Employer. The amount of Supplemental Contribution
          made on behalf of Employees on the Employer's payroll for its Utah and
          Mississippi plants need not be uniform.

     (2)  Effective January 1, 1999, Section 5.04 of the Plan is amended in its
          entirety to provide as follows:

               5.04 ALLOCATION OF SUPPLEMENTAL CONTRIBUTION. The Committee shall
          allocate the Supplemental Contribution for its Employees who are on
          its payroll for its Utah plant among the Employer's Members who are on
          its payroll for its Utah plant in the proportion that the Considered
          Compensation of each such Member bears to the total Considered
          Compensation of all such Members for the Plan Year. The Committee
          shall allocate the Supplemental Contribution for its Employees who are

<PAGE>   2

          on its payroll for its Mississippi plant among the Employer's Members
          who are on its payroll for its Mississippi plant in the proportion
          that the Considered Compensation of each such Member bears to the
          total Considered Compensation of all such Members for the Plan Year.

     IN WITNESS WHEREOF, the Sponsor has caused this Agreement to be executed
this day of December, 1998.

                                        PIPER IMPACT, INC.


                                       By:
                                           ------------------------------------

                                       Title:
                                             ---------------------------------


<PAGE>   1
                                                                     EXHIBIT 4.8




                             MASTER TRUST AGREEMENT

                                     BETWEEN

 ------------------------------------------------------------------------------

                               QUANEX CORPORATION

                                       AND

                        FIDELITY MANAGEMENT TRUST COMPANY

 ------------------------------------------------------------------------------

                             QUANEX EMPLOYEE SAVINGS
                                  MASTER TRUST




                          DATED AS OF FEBRUARY 1, 1999
<PAGE>   2


         TRUST AGREEMENT, dated as of the first day of February 1999, between
QUANEX CORPORATION a Delaware corporation, having an office at 1900 West Loop
South, Houston, Texas 77027 (the "Sponsor"), and FIDELITY MANAGEMENT TRUST
COMPANY, a Massachusetts trust company, having an office at 82 Devonshire
Street, Boston, Massachusetts 02109 (the "Trustee").

                                   WITNESSETH:

         WHEREAS, the Sponsor or one of its subsidiaries is the sponsor of the
Quanex Corporation Employee Savings Plan, the Quanex Corporation Hourly
Bargaining Unit Employees Savings Plan, the Piper Impact 401(k) Plan, the
Nichols-Homeshield 401(k) Savings Plan and the Nichols-Homeshield 401(k) Savings
Plan for Hourly Davenport Employees (collectively and individually, the "Plan");
and

         WHEREAS, certain affiliates and subsidiaries of the Sponsor maintain,
or may in the future maintain, qualified defined contribution plans for the
benefit of their eligible employees; and

         WHEREAS, the Sponsor desires to establish a single trust to hold all of
the assets of the Plan and or such other tax-qualified defined contribution
plans maintained by the Sponsor, or any of its subsidiaries or affiliates, as
are designated by the Sponsor as being eligible to participate therein; and

         WHEREAS, the Trustee shall maintain a separate account reflecting the
equitable share of each Plan in the Trust and in all investments, receipts,
disbursements and other transactions hereunder, and shall report the value of
such equitable share at such times as may be mutually agreed upon by the Trustee
and the Sponsor. Such equitable share shall be used solely for the payments of
benefits, expenses and other charges properly allocable to each such Plan and
shall not be used for the payment of benefits, expenses or other charges
properly allocable to any other Plan; and

         WHEREAS, the Trustee is willing to hold and invest the aforesaid plan
assets in trust pursuant to the provisions of this Trust Agreement, which trust
shall constitute a continuation, by means of an amendment and restatement, of
each of the prior trusts from which plan assets are transferred to the Trustee;
and



<PAGE>   3

         WHEREAS, the Trustee is willing to hold and invest the aforesaid plan
assets in trust among several investment options selected by the Named
Fiduciary; and

         WHEREAS, the Trustee is willing to perform recordkeeping and
administrative services for the Plan if the services are purely ministerial in
nature and are provided within a framework of plan provisions, guidelines and
interpretations conveyed in writing to the Trustee by the Administrator.

         NOW, THEREFORE, in consideration of the foregoing premises and the
mutual covenants and agreements set forth below, the Sponsor and the Trustee
agree as follows:

SECTION 1. DEFINITIONS. The following terms as used in this Trust Agreement have
the meaning indicated unless the context clearly requires otherwise:

(a)    "Administrator" shall mean, with respect to the Plan, the person or
       entity which is the "administrator" of such Plan within the meaning of
       section 3(16)(A) of ERISA.

(b)    "Agreement" shall mean this Trust Agreement, as the same may be amended
       and in effect from time to time.

(c)    "Code" shall mean the Internal Revenue Code of 1986, as it has been or
       may be amended from time to time.

(d)    "ERISA" shall mean the Employee Retirement Income Security Act of 1974,
       as it has been or may be amended from time to time.

(e)    "Existing Investment Contracts" shall mean shall mean each annuity
       contract heretofore entered into by the Sponsor, any other Employer or
       any predecessor trustee and specifically identified on Schedule "G"
       attached hereto.

(f)    "Fidelity Mutual Fund" shall mean any investment company advised by
       Fidelity Management & Research Company or any of its affiliates.

(g)    "Mutual Fund" shall refer both to Fidelity Mutual Funds and Non-Fidelity
       Mutual Funds.

(h)    "Named Fiduciary" shall mean, with respect to the application of any
       provision of this Agreement to any Plan, the person or entity which is
       the relevant fiduciary under such Plan with respect to such matter
       (within the meaning of section 402(a) of the Employee Retirement Income
       Security Act of 1974, as amended); and

(i)    "Non-Fidelity Mutual Fund" shall mean certain investment companies not
       advised by Fidelity Management & Research Company or any of its
       affiliates.


                                       2
<PAGE>   4


(j)    "Participant" shall mean, with respect to the Plan, any employee (or
       former employee) with an account under the Plan, which has not yet been
       fully distributed and/or forfeited, and shall include the designated
       beneficiary(ies) with respect to the account of any deceased employee (or
       deceased former employee) until such account has been fully distributed
       and/or forfeited.

(k)    "Plan" shall mean the Quanex Corporation Employee Savings Plan, the
       Quanex Corporation Hourly Bargaining Unit Employees Savings Plan, the
       Piper Impact 401(k) Plan, the Nichols-Homeshield 401(k) Savings Plan, the
       Nichols-Homeshield 401(k) Savings Plan for Hourly Davenport Employees and
       such other tax-qualified, defined contribution plans which are maintained
       by the Sponsor or any of its subsidiaries or affiliates for the benefit
       of their eligible employees as may be designated by the Sponsor in
       writing to the Trustee as a Plan hereunder, such writing to be in the
       form of the Plan Designation Form attached hereto as Schedule "J". Each
       reference to "a Plan" or "the Plan" in this Agreement shall mean and
       include the Plan or Plans to which the particular provision of this
       Agreement is being applied or all Plans, as the context may require.

(l)    "Reporting Date" shall mean the last day of each calendar quarter, the
       date as of which the Trustee resigns or is removed pursuant to Section 9
       hereof and the date as of which this Agreement terminates pursuant to
       Section 11 hereof.

(m)    "Sponsor" shall mean Quanex Corporation, a Delaware corporation, or any
       successor to all or substantially all of its businesses which, by
       agreement, operation of law or otherwise, assumes the responsibility of
       the Sponsor under this Agreement.

(n)    "Sponsor Stock" shall mean the Common Stock of the Sponsor, or such other
       publicly-traded stock of the Sponsor, or such other publicly-traded stock
       of the Sponsor's affiliates as meets the requirements of section
       407(d)(5) of ERISA with respect to the Plan.

(o)    "Trust" shall mean the Quanex Employee Savings Master Trust, being the
       trust established by the Sponsor and the Trustee pursuant to the
       provisions of this Agreement.

(p)    "Trustee" shall mean Fidelity Management Trust Company, a Massachusetts
       trust company and any successor to all or substantially all of its trust
       business as described in Section 10(c). The term Trustee shall also
       include any successor trustee appointed pursuant to Section 10 to the
       extent such successor agrees to serve as Trustee under this Agreement.


SECTION 2. TRUST. The Sponsor hereby establishes the Trust with the Trustee. The
Trust shall consist of the assets of the Plan that are transferred from the
previous trusts funding to the Plan, such additional sums of money and Sponsor
Stock as shall from time to time be delivered to the Trustee under a Plan, all
investments made therewith and proceeds thereof, and all earnings and profits
thereon, less the payments that are made by the Trustee as provided herein,
without distinction between principal and income. The Trustee hereby accepts the
Trust on the terms and conditions set forth in this Agreement. In accepting this
Trust, the Trustee shall be accountable for the assets received by it, subject
to the terms and conditions of this Agreement.


                                       3
<PAGE>   5


SECTION 3.  EXCLUSIVE BENEFIT AND REVERSION OF SPONSOR CONTRIBUTIONS.

Except as provided under applicable law, no part of the Trust allocable to a
Plan may be used for, or diverted to, purposes other than the exclusive benefit
of the Participants in the Plan or their beneficiaries prior to the satisfaction
of all liabilities with respect to the Participants and their beneficiaries.

SECTION 4.  DISBURSEMENTS.

         (a) Directions from Administrator. The Trustee shall make disbursements
in the amounts and in the manner that the Administrator directs from time to
time in writing. The Trustee shall have no responsibility to ascertain any
direction's compliance with the terms of the Plan or of any applicable law or
the direction's effect for tax purposes or otherwise; nor shall the Trustee have
any responsibility to see to the application of any disbursement.

         (b) Limitations. The Trustee shall not be required to make any
disbursement under a Plan in excess of the net realizable value of the assets of
the Trust allocable to such Plan at the time of the disbursement. The Trustee
shall not be required to make any disbursement in cash unless the Named
Fiduciary has provided a written direction as to the assets to be converted to
cash for the purpose of making the disbursement.

SECTION 5.  INVESTMENT OF TRUST.

         (a) Selection of Investment Options. The Trustee shall have no
responsibility for the selection of investment options under the Trust and shall
not render investment advice to any person in connection with the selection of
such options.

         (b) Available Investment Options. The Named Fiduciary with respect to a
Plan shall direct the Trustee as to the investment options in which Plan
Participants may invest, subject to the following limitations. The Named
Fiduciary may determine to offer as investment options only (i) Mutual Funds,
(ii) Sponsor Stock, (iii) notes evidencing loans to Participants in accordance
with the terms of the Plan, (iv) Existing Investment Contracts, and (v)
collective investment funds maintained by the Trustee for qualified plans.

         The Named Fiduciary hereby directs the Trustee to continue to hold such
Existing Investment Contracts until the Named Fiduciary directs otherwise, it
being expressly understood that such direction is given in accordance with
Section 403(a) of ERISA. The Trustee shall be considered a fiduciary with


                                       4
<PAGE>   6


investment discretion only with respect to Plan assets that are invested in
collective investment funds maintained by the Trustee for qualified plans.

         The investment options initially selected by the Named Fiduciary are
identified on Schedules "A" and "C" attached hereto. The Named Fiduciary may add
additional investment options with the consent of the Trustee and upon mutual
amendment of this Trust Agreement and the Schedules thereto to reflect such
additions.

         (c) Participant Direction. Each Participant shall direct the Trustee in
which investment option(s) to invest the assets in the Participant's individual
accounts. Such directions may be made by Participants by use of the telephone
exchange system maintained for such purposes by the Trustee or its agent, in
accordance with written Telephone Exchange Guidelines attached hereto as
Schedule "G". In the event that the Trustee fails to receive a proper direction,
the assets shall be invested in the securities of the Mutual Fund set forth for
such purpose on Schedule "C", until the Trustee receives a proper direction.

         (d) Mutual Funds. The Sponsor hereby acknowledges that it has received
from the Trustee a copy of the prospectus for each Fidelity Mutual Fund selected
by the Named Fiduciary as a Plan investment option. All transactions involving
Non-Fidelity Mutual Funds shall be done in accordance with the Operational
Guidelines for Non-Fidelity Mutual Funds attached hereto as Schedule "H". Trust
investments in Mutual Funds shall be subject to the following limitations:

                  (i) Execution of Purchases and Sales. Purchases and sales of
Mutual Funds (other than for exchanges) shall be made on the date on which the
Trustee receives from the Sponsor in good order all information and
documentation necessary to accurately effect such purchases and sales (or in the
case of a purchase, the subsequent date on which the Trustee has received a wire
transfer of funds necessary to make such purchase). Exchanges of Mutual Funds
shall be made in accordance with the Telephone Exchange Guidelines attached
hereto as Schedule "G".

                  (ii) Voting. At the time of mailing of notice of each annual
or special stockholders' meeting of any Mutual Fund, the Trustee shall send a
copy of the notice and all proxy solicitation materials to each Participant who
has shares of the Mutual Fund credited to the Participant's accounts, together
with a voting direction form for return to the Trustee or its designee. The
Sponsor shall have the right to direct the Trustee as to the manner in which the
Trustee is to vote the mutual fund shares held in any short-term


                                       5
<PAGE>   7


investment fund or liquidity reserve. The Participant shall have the right to
direct the Trustee as to the manner in which the Trustee is to vote the shares
credited to the Participant's accounts (both vested and unvested). The Trustee
shall vote the shares as directed by the Participant. The Trustee shall not vote
shares for which it has received no directions from the Participant. With
respect to all rights other than the right to vote, the Trustee shall follow the
directions of the Participant and if no such directions are received, the
directions of the Named Fiduciary. The Trustee shall have no duty to solicit
directions from Participants or the Sponsor.

         (e) Sponsor Stock. Trust investments in Sponsor Stock shall be made via
the Quanex Corporation Stock Fund (the "Stock Fund") which shall consist of
shares of Sponsor Stock and short-term liquid investments, including Fidelity
Institutional Cash Portfolios: Money Market Portfolio: Class I or such other
Mutual Fund or commingled money market pool as agreed to by the Sponsor and
Trustee, necessary to satisfy the Fund's cash needs for transfers and payments.
A cash target range shall be maintained in the Stock Fund. Such target range may
be changed as agreed to in writing by the Sponsor and the Trustee. The Trustee
is responsible for ensuring that the actual cash held in the Stock Fund falls
within the agreed upon range over time. Each Participant's proportional interest
in the Stock Fund shall be measured in units of participation, rather than
shares of Sponsor Stock. Such units shall represent a proportionate interest in
all of the assets of the Stock Fund, which includes shares of Sponsor Stock,
short-term investments and at times, receivables for dividends and/or Sponsor
Stock sold and payables for Sponsor Stock purchased. A Net Asset Value ("NAV")
per unit will be determined daily for each unit outstanding of the Stock Fund.
The return earned by the Stock Fund will represent a combination of the
dividends paid on the shares of Sponsor Stock held by the Stock Fund, gains or
losses realized on sales of Sponsor Stock, appreciation or depreciation in the
market price of those shares owned, and interest on the short-term investments
held by the Stock Fund. Dividends received by the Stock Fund are reinvested in
additional shares of Sponsor Stock. Investments in Sponsor Stock shall be
subject to the following limitations:

                  (i) Acquisition Limit. Pursuant to the Plan, the Trust may be
invested in Sponsor Stock to the extent necessary to comply with investment
directions under Section 5(c) of this Agreement.

                  (ii) Fiduciary Duty of Named Fiduciary. The Named Fiduciary
shall continually monitor the suitability under the fiduciary duty rules of
section 404(a)(1) of ERISA (as modified by


                                       6
<PAGE>   8


section 404(a)(2) of ERISA) of acquiring and holding Sponsor Stock. The Trustee
shall not be liable for any loss, or by reason of any breach, which arises from
the directions of the Named Fiduciary with respect to the acquisition and
holding of Sponsor Stock, unless it is clear on their face that the actions to
be taken under those directions would be prohibited by the foregoing fiduciary
duty rules or would be contrary to the terms of the Plan or this Agreement.

                  (iii) Execution of Purchases and Sales. (A) Purchases and
sales of Sponsor Stock (other than for exchanges) shall be made on the open
market on the date on which the Trustee receives from the Sponsor in good order
all information and documentation necessary to accurately affect such purchases
and sales (or, in the case of purchases, the subsequent date on which the
Trustee has received a wire transfer of the funds necessary to make such
purchases). Exchanges of Sponsor Stock shall be made in accordance with the
Telephone Exchange Guidelines attached hereto as Schedule "G". Such general
rules shall not apply in the following circumstances:

                           (1) If the Trustee is unable to determine the number
of shares required to be purchased or sold on such day; or

                           (2) If the Trustee is unable to purchase or sell the
total number of shares required to be purchased or sold on such day as a result
of market conditions; or

                           (3) If the Trustee is prohibited by the Securities
and Exchange Commission, the New York Stock Exchange, or any other regulatory
body from purchasing or selling any or all of the shares required to be
purchased or sold on such day.

In the event of the occurrence of the circumstances described in (1), (2), or
(3) above, the Trustee shall purchase or sell such shares as soon as possible
thereafter and shall determine the price of such purchases or sales to be the
average purchase or sales price of all such shares purchased or sold,
respectively. The Trustee may follow directions from the Named Fiduciary to
deviate from the above purchase and sale procedures provided that such direction
is made in writing by the Named Fiduciary.

                  (B) Purchases and Sales from or to Sponsor. If directed by the
Sponsor in writing prior to the trading date, the Trustee may purchase or sell
Sponsor Stock from or to the Sponsor if the


                                       7
<PAGE>   9


purchase or sale is for adequate consideration (within the meaning of section
3(18) of ERISA) and no commission is charged. If Sponsor contributions or
contributions made by the Sponsor on behalf of the Participants under the Plan
are to be invested in Sponsor Stock, the Sponsor may transfer Sponsor Stock in
lieu of cash to the Trust. In either case, the number of shares to be
transferred will be determined by dividing the total amount of Sponsor Stock to
be purchased or sold by the 4:00 p.m. closing price of the Sponsor Stock on the
New York Stock Exchange on the trading date.

                  (C) Use of an Affiliated Broker. The Sponsor hereby directs
the Trustee to use Fidelity Capital Markets and its affiliates ("Capital
Markets") to provide brokerage services in connection with any purchase or sale
of Sponsor Stock in accordance with directions from Plan Participants. Capital
Markets shall execute such directions directly or through its affiliate,
National Financial Services Company ("NFSC"). The provision of brokerage
services shall be subject to the following:

                           (1) As consideration for such brokerage services, the
Sponsor agrees that Capital Markets shall be entitled to remuneration under this
authorization provision in an amount of no greater than three and two-fifths
cents ($.032) commission on each share of Sponsor Stock. Any change in such
remuneration may be made only by a signed agreement between Sponsor and Trustee.

                           (2) The Trustee will provide the Sponsor with a
description of Capital Markets' brokerage placement practices and a form by
which the Sponsor may terminate this direction to use a broker affiliated with
the Trustee. The Trustee will provide the Sponsor with this termination form
annually, as well as quarterly and annual reports which summarize all securities
transaction-related charges incurred by the Plan.

                           (3) Any successor organization of Capital Markets,
through reorganization, consolidation, merger or similar transactions, may, upon
consumption of such transaction, become the successor broker in accordance with
the terms of this direction provision.

                           (4) The Trustee and Capital Markets shall continue to
rely on this direction provision until notified to the contrary. The Sponsor
reserves the right to terminate this direction upon sixty (60) days written
notice to Capital Markets (or its successor) and the Trustee, in accordance with
Section 11 of this Agreement.


                                       8
<PAGE>   10


                  (iv) Securities Law Reports. The Named Fiduciary shall be
responsible for filing all reports required under Federal or state securities
laws with respect to the Trust's ownership of Sponsor Stock, including, without
limitation, any reports required under section 13 or 16 of the Securities
Exchange Act of 1934, and shall immediately notify the Trustee in writing of any
requirement to stop purchases or sales of Sponsor Stock pending the filing of
any report. The Trustee shall provide to the Named Fiduciary such information on
the Trust's ownership of Sponsor Stock as the Named Fiduciary may reasonably
request in order to comply with Federal or state securities laws.

                  (v) Voting and Tender Offers. Notwithstanding any other
provision of this Agreement the provisions of this Section shall govern the
voting and tendering of Sponsor Stock. The Sponsor, after consultation with the
Trustee, shall provide and pay for all printing, mailing, tabulation and other
costs associated with the voting and tendering of Sponsor Stock.

                           (A)      Voting.

                                    (1) When the issuer of the Sponsor Stock
prepares for any annual or special meeting , the Sponsor shall notify the
Trustee at least thirty (30) days in advance of the intended record date and
shall cause a copy of all materials to be sent to the Trustee. Based on these
materials the Trustee shall prepare a voting instruction form. At the time of
mailing of notice of each annual or special stockholders' meeting of the issuer
of the Sponsor Stock, the Sponsor shall cause a copy of the notice and all proxy
solicitation materials to be sent to each Plan Participant with an interest in
Sponsor Stock held in the Trust, together with the foregoing voting instruction
form to be returned to the Trustee or its designee. The form shall show the
proportional interest in the number of full and fractional shares of Sponsor
Stock credited to the Participant's accounts held in the Stock Fund. The Sponsor
shall provide the Trustee with a copy of any materials provided to the
Participants pursuant to this Section 5(e)(v)(A) and shall certify to the
Trustee that the materials have been mailed or otherwise sent to Participants.

                                    (2) Each Participant with an interest in the
Stock Fund shall have the right to direct the Trustee as to the manner in which
the Trustee is to vote (including not to vote) that number of shares of Sponsor
Stock reflecting such Participant's proportional interest in the Stock Fund
(both vested and unvested). Directions from a Participant to the Trustee
concerning the voting of Sponsor


                                       9
<PAGE>   11


Stock shall be communicated in writing, or by mailgram or similar means. These
directions shall be held in confidence by the Trustee and shall not be divulged
to the Sponsor, or any officer or employee thereof, or any other person except
to the extent that the aggregate consequences of such directions are reflected
in reports regularly communicated to any such person in the ordinary course of
the performance of the Trustee's services hereunder. Upon its receipt of the
directions, the Trustee shall vote the shares of Sponsor Stock reflecting the
Participant's proportional interest in the Stock Fund as directed by the
Participant. Except as otherwise required by law, the Trustee shall vote shares
of Sponsor Stock reflecting a Participant's proportional interest in the Stock
Fund for which it has received no direction from the Participant in the same
proportion on each issue as it votes shares for which it has received voting
instructions from Participants.

                                    (3) Except as otherwise required by law, the
Trustee shall vote that number of shares of Sponsor Stock not credited to
Participants' accounts which is determined by multiplying the total number of
shares not credited to Participant's accounts by a fraction of which the
numerator is the number of shares of Sponsor Stock reflecting a Participant's
proportional interest in the Stock Fund that are credited to Participant's
accounts for which the Trustee received voting directions from Participants and
of which the denominator is the total number of shares of Sponsor Stock
reflecting a Participant's proportional interest in the Stock Fund that are
credited to participants' accounts. The Trustee shall vote those shares of
Sponsor Stock not credited to Participant's accounts which are to be voted by
the Trustee pursuant to the foregoing formula in the same proportion on each
issue as it votes those shares reflecting a Participant's proportional interest
in the Stock Fund that are credited to Participants' accounts for which it
received voting directions from Participants. The Trustee shall not vote the
remaining shares of Sponsor Stock not credited to Participant's accounts.

                           (B)      Tender Offers.

                                    (1) Upon commencement of a tender offer for
any securities held in the Trust that are Sponsor Stock, the Sponsor shall
notify each Plan Participant with an interest in such Sponsor Stock of the
tender offer and utilize its best efforts to timely distribute or cause to be
distributed to the Participant the same information that is distributed to
shareholders of the issuer of Sponsor Stock in connection with the tender offer,
and, after consulting with the Trustee, shall provide and pay for a means by
which the Participant may direct the Trustee whether or not to tender the
Sponsor Stock reflecting such


                                       10
<PAGE>   12


Participant's proportional interest in the Stock Fund (both vested and
unvested). The Sponsor shall provide the Trustee with a copy of any material
provided to the Participants pursuant to this Section 5(e)(v)(B) and shall
certify to the Trustee that the materials have been mailed or otherwise sent to
Participants.

                                    (2) Each Participant shall have the right to
direct the Trustee to tender or not to tender some or all of the shares of
Sponsor Stock reflecting such Participant's proportional interest in the Stock
Fund (both vested and unvested). Directions from a Participant to the Trustee
concerning the tender of Sponsor Stock shall be communicated in writing, or by
mailgram or such similar means as is agreed upon by the Trustee and the Sponsor
under the preceding paragraph. These directions shall be held in confidence by
the Trustee and shall not be divulged to the Sponsor, or any officer or employee
thereof, or any other person except to the extent that the consequences of such
directions are reflected in reports regularly communicated to any such persons
in the ordinary course of the performance of the Trustee's services hereunder.
The Trustee shall tender or not tender shares of Sponsor Stock as directed by
the Participant. Except as otherwise required by law, the Trustee shall not
tender shares of Sponsor Stock reflecting a Participant's proportional interest
in the Stock Fund for which it has received no direction from the Participant.

                                    (3) Except as otherwise required by law, the
Trustee shall tender that number of shares of Sponsor Stock not credited to
Participants' accounts which is determined by multiplying the total number of
shares of Sponsor Stock not credited to Participants' accounts by a fraction of
which the numerator is the number of shares of Sponsor Stock reflecting the
Participants' proportional interests in the Stock Fund that are credited to
Participants' accounts for which the Trustee has received directions from
Participants to tender and of which the denominator is the total number of
shares of Sponsor Stock reflecting the Participants' proportional interests in
the Stock Fund that are credited to Participants' accounts.

                                    (4) A Participant who has directed the
Trustee to tender some or all of the shares of Sponsor Stock reflecting the
Participant's proportional interest in the Stock Fund may, at any time prior to
the tender offer withdrawal date, direct the Trustee to withdraw some or all of
the tendered shares reflecting the Participant's proportional interest, and the
Trustee shall withdraw the directed number of shares from the tender offer prior
to the tender offer withdrawal deadline. Prior to the withdrawal deadline, if
any shares of Sponsor Stock not credited to Participants' accounts have been


                                       11
<PAGE>   13


tendered, the Trustee shall redetermine the number of shares of Sponsor Stock
that would be tendered under Section 5(e)(v)(B)(3) if the date of the foregoing
withdrawal were the date of determination, and withdraw from the tender offer
the number of shares of Sponsor Stock not credited to Participants' accounts
necessary to reduce the amount of tendered Sponsor Stock not credited to
Participants' accounts to the amount so redetermined. A Participant shall not be
limited as to the number of directions to tender or withdraw that the
Participant may give to the Trustee.

                                    (5) A direction by a Participant to the
Trustee to tender shares of Sponsor Stock reflecting the Participant's
proportional interest in the Stock Fund shall not be considered a written
election under the Plan by the Participant to withdraw, or have distributed, any
or all of his withdrawable shares. The Trustee shall credit to each proportional
interest of the Participant from which the tendered shares were taken the
proceeds received by the Trustee in exchange for the shares of Sponsor Stock
tendered from that interest. Pending receipt of directions (through the
Administrator) from the Participant or the Named Fiduciary, as provided in the
Plan, as to which of the remaining investment options the proceeds should be
invested in, the Trustee shall invest the proceeds in the Mutual Fund described
in Schedule "C".

                  (vi) Shares Credited. For all purposes of this Section, the
number of shares of Sponsor Stock deemed "credited" or "reflected" to a
Participant's proportional interest shall be determined as of the relevant date
(the record date or the date specified in the tender offer) shall be calculated
by reference to the number of shares reflected on the books of the transfer
agent as of the relevant date.

                  (vii) General. With respect to all rights other than the right
to vote, the right to tender, and the right to withdraw shares previously
tendered, in the case of Sponsor Stock credited to a Participant's proportional
interest in the Stock Fund, the Trustee shall follow the directions of the
Participant and if no such directions are received, the directions of the Named
Fiduciary. The Trustee shall have no duty to solicit directions from
Participants. With respect to all rights other than the right to vote and the
right to tender, in the case of Sponsor Stock not credited to Participants'
accounts, the Trustee shall follow the directions of the Named Fiduciary.

                  (viii) Conversion. All provisions in this Section 5(e) shall
also apply to any securities received as a result of a conversion of Sponsor
Stock.


                                       12
<PAGE>   14


         (f) Participant Loans. The Administrator shall act as the Trustee's
agent for the purpose of holding all trust investments in participant loan notes
and related documentation and as such shall (i) hold physical custody of and
keep safe the notes and other loan documents, (ii) separately account for
repayments of such loans and clearly identify such assets as Plan assets, (iii)
collect and remit all principal and interest payments to the Trustee, and (iv)
cancel and surrender the notes and other loan documentation when a loan has been
paid in full. To originate a participant loan, the Plan participant shall direct
the Trustee as to the type of loan to be made from the participant's individual
account. Such directions shall be made by Plan participants by use of the
telephone exchange system maintained for such purpose by the Trustee or its
agent. The Trustee shall determine, based on the current value of the
participant's account, the amount available for the loan. Based on the interest
rate supplied by the Sponsor in accordance with the terms of the Plan, the
Trustee shall advise the participant of such interest rate, as well as the
installment payment amounts. The Trustee shall forward the loan document to the
participant for execution and submission for approval to the Administrator. The
Administrator shall have the responsibility for approving the loan and
instructing the Trustee to send the loan proceeds to the Administrator or to the
participant if so directed by the Administrator. In all cases, if the Trustee
does not receive approval or disapproval by the Administrator within thirty (30)
days of the participant's initial request (the origination date) the participant
will be required to reinitiate the loan request process.

         (g) Commingled Pool Investments. To the extent that the Named Fiduciary
selects as an investment option the Managed Income Portfolio of the Fidelity
Group Trust for Employee Benefit Plans (the "Group Trust"), the Sponsor hereby
(i) agrees to the terms of the Group Trust and adopts said terms as a part of
this Agreement and (ii) acknowledges that it has received from the Trustee a
copy of the Group Trust, the Declaration of Separate Fund for the Managed Income
Portfolio of the Group Trust, and the Circular for the Managed Income Portfolio.

         (h) Reliance of Trustee on Directions.

                  (i) The Trustee shall not be liable for any loss, or by reason
of any breach, which arises from any Participant's exercise or non-exercise of
rights under this Section 5 over the assets in the Participant's accounts.


                                       13
<PAGE>   15


                  (ii) The Trustee shall not be liable for any loss, or by
reason of any breach, which arises from the Named Fiduciary's exercise or
non-exercise of rights under this Section 5, unless it was clear on their face
that the actions to be taken under the Named Fiduciary's directions were
prohibited by the fiduciary duty rules of Section 404(a) of ERISA or were
contrary to the terms of the Plan or this Agreement.

         (i) Trustee Powers. The Trustee shall have the following powers and
authority:

                  (i) Subject to paragraphs (b), (c) and (d) of this Section 5,
to sell, exchange, convey, transfer, or otherwise dispose of any property held
in the Trust, by private contract or at public auction. No person dealing with
the Trustee shall be bound to see to the application of the purchase money or
other property delivered to the Trustee or to inquire into the validity,
expediency, or propriety of any such sale or other disposition.

                  (ii) Subject to paragraphs (b) and (c) of this Section 5, to
invest in Investment Contracts and short term investments (including interest
bearing accounts with the Trustee or money market mutual funds advised by
affiliates of the Trustee) and in collective investment funds maintained by the
Trustee for qualified plans, in which case the provisions of each collective
investment fund in which the Trust is invested shall be deemed adopted by the
Sponsor and the provisions thereof incorporated as a part of this Trust as long
as the fund remains exempt from taxation under sections 401(a) and 501(a) of the
Code.

                  (iii) To cause any securities or other property held as part
of the Trust to be registered in the Trustee's own name, in the name of one or
more of its nominees, or in the Trustee's account with the Depository Trust
Company of New York and to hold any investments in bearer form, but the books
and records of the Trustee shall at all times show that all such investments are
part of the Trust.

                  (iv) To keep that portion of the Trust in cash or cash
balances as the Named Fiduciary or Sponsor may, from time to time, deem to be in
the best interest of the Trust.

                  (v) To make, execute, acknowledge, and deliver any and all
documents of transfer or conveyance and to carry out the powers herein granted.

                  (vi) To borrow funds from a bank not affiliated with the
Trustee in order to provide sufficient liquidity to process Plan transactions in
a timely fashion, provided that the cost of borrowing shall be allocated in a
reasonable fashion to the investment fund(s) in need of liquidity.


                                       14
<PAGE>   16


                  (vii) To settle, compromise, or submit to arbitration any
claims, debts, or damages due to or arising from the Trust; to commence or
defend suits or legal or administrative proceedings; to represent the Trust in
all suits and legal and administrative hearings; and to pay all reasonable
expenses arising from any such action, from the Trust if not paid by the
Sponsor.

                  (viii) To employ legal, accounting, clerical, and other
assistance as may be required in carrying out the provisions of this Agreement
and to pay their reasonable expenses and compensation from the Trust if not paid
by the Sponsor.

                  (ix) To invest all of any part of the assets of the Trust in
any collective investment trust or group trust which then provides for the
pooling of the assets of plans described in section 401(a) and exempt from tax
under section 501(a) of the Code, or any comparable provisions of any future
legislation that amends, supplements, or supersedes those sections, provided
that such collective investment trust or group trust is exempt from tax under
the Code or regulations or rulings issued by the Internal Revenue Service; the
provisions of the document governing such collective investment trusts or group
trusts, as it may be amended from time to time, shall govern any investment
therein and are hereby made a part of this Trust Agreement.

                  (x) To do all other acts that are in accordance with the
powers granted to the Trustee under common law, the applicable state trust law
and other applicable statutes.

SECTION 6.  RECORDKEEPING AND ADMINISTRATIVE SERVICES TO BE PERFORMED.

         (a) General. The Trustee shall perform those recordkeeping and
administrative functions described in Schedule "A" attached hereto. These
recordkeeping and administrative functions shall be performed within the
framework of the Named Fiduciary's written directions regarding the Plan's
provisions, guidelines and interpretations.

         (b) Accounts. The Trustee shall keep accurate accounts of all
investments, receipts, disbursements, and other transactions hereunder, and
shall report the value of the assets held in the Trust as of each Reporting
Date. Within thirty (30) days following each Reporting Date or within sixty (60)
days in the case of a Reporting Date caused by the resignation or removal of the
Trustee, or the termination of this Agreement, the Trustee shall file with the
Sponsor a written account setting forth all investments, receipts,
disbursements, and other transactions affected by the Trustee between the
Reporting Date and the prior


                                       15
<PAGE>   17


Reporting Date, and setting forth the value of the Trust as of the Reporting
Date. Except as otherwise required under ERISA, upon the expiration of six (6)
months from the date of filing such account with the Sponsor, the Trustee shall
have no liability or further accountability to anyone with respect to the
propriety of its acts or transactions shown in such account, except with respect
to such acts or transactions as to which the Sponsor shall within such six (6)
month period file with the Trustee written objections.

         (c) Inspection and Audit. All records generated by the Trustee in
accordance with paragraphs (a) and (b) shall be open to inspection and audit,
during the Trustee's regular business hours prior to the termination of this
Agreement, by the Sponsor or any person designated by the Sponsor. Upon the
resignation or removal of the Trustee or the termination of this Agreement, the
Trustee shall provide to the Sponsor, at no expense to the Sponsor, in the
format regularly provided to the Sponsor, a statement of each Participant's
accounts as of the resignation, removal, or termination, and the Trustee shall
provide to the Sponsor or the Plan's new recordkeeper such further records as
are reasonable, at the Sponsor's expense.

         (d) Effect of Plan Amendment. A confirmation of the current qualified
status of each Plan is attached hereto as Schedule "F". The Trustee's provision
of the recordkeeping and administrative services set forth in this Section 6
shall be conditioned on the Sponsor delivering to the Trustee a copy of any
amendment to the Plan as soon as administratively feasible following the
amendment's adoption, with, if requested, an IRS determination letter or an
opinion of counsel substantially in the form of Schedule "F" covering such
amendment, and on the Sponsor providing the Trustee on a timely basis with all
the information the Sponsor deems necessary for the Trustee to perform the
recordkeeping and administrative services and such other information as the
Trustee may reasonably request.

         (e) Returns, Reports and Information. The Sponsor shall be responsible
for the preparation and filing of all returns, reports, and information required
of the Trust or Plan by law. The Trustee shall provide the Sponsor with such
information as the Sponsor may reasonably request to make these filings. The
Sponsor shall also be responsible for making any disclosures to Participants
required by law including, without limitation, such disclosures as may be
required by law, except such disclosure as may be required under federal or
state truth-in-lending laws with regard to Participant loans, which shall be
provided by the Trustee.


                                       16
<PAGE>   18


         (f) Allocation of Plan Interests. All transfers to, withdrawals from,
or other transactions regarding the Trust shall be conducted in such a way that
the proportionate interest in the Trust of each Plan and the fair market value
of that interest may be determined at any time. Whenever the assets of more than
one Plan are commingled in the Trust or in any investment option, the undivided
interest therein of each such Plan shall be debited or credited (as the case may
be) (i) for the entire amount of every contribution received on behalf of such
Plan, every benefit payment, or other expense attributable solely to such Plan,
and every other transaction relating only to such Plan; and (ii) for its
proportionate share of every item of collected or accrued income, gain or loss,
and general expense, and of any other transactions attributable to the Trust or
that investment option as a whole.

SECTION 7. COMPENSATION AND EXPENSES. Within thirty (30) days of receipt of the
Trustee's bill, which shall be computed and billed in accordance with Schedule
"B" attached hereto and made a part hereof, as amended from time to time, the
Sponsor shall send to the Trustee a payment in such amount or the Sponsor may
direct the Trustee to deduct such amount from Participants' account. All
expenses of the Trustee relating directly to the acquisition and disposition of
investments constituting part of the Trust, and all taxes of any kind whatsoever
that may be levied or assessed under existing or future laws upon or in respect
of the Trust or the income thereof, shall be a charge against and paid from the
appropriate Participants' accounts.

SECTION 8.  DIRECTIONS AND INDEMNIFICATION.

         (a) Identity of Sponsor and Named Fiduciaries. The Trustee shall be
fully protected in relying on the fact that the Sponsor and the Named
Fiduciaries under a Plan are the individuals or persons named as such on the
Authorization Letters in the form of Schedules "D" and "E" attached hereto or on
a Plan Designation Form in accordance with Schedule "J" attached hereto or such
other individuals or persons as the Sponsor may notify the Trustee in writing.

         (b) Directions from Sponsor or Administrator. Whenever the Sponsor or
Administrator provides a direction to the Trustee, the Trustee shall not be
liable for any loss, or by reason of any breach, arising from the direction if
the direction is contained in a writing (or is oral and immediately confirmed in
a writing) signed by any individual whose name and signature have been submitted
(and not withdrawn) in writing to the Trustee by the Sponsor in the form
attached hereto as Schedule "D", provided the Trustee reasonably believes the
signature of the individual to be genuine. Such direction may also be made via


                                       17
<PAGE>   19


Electronic Data Transfer ("EDT") in accordance with procedures agreed to by the
Sponsor and the Trustee; provided, however, that the Trustee shall be fully
protected in relying on such direction as if it were a direction made in writing
by the Sponsor. The Trustee shall have no responsibility to ascertain any
direction's (i) accuracy, (ii) compliance with the terms of the Plan or any
applicable law, or (iii) effect for tax purposes or otherwise.

         (c) Directions from Named Fiduciary. Whenever a Named Fiduciary
provides a direction to the Trustee, the Trustee shall not be liable for any
loss, or by reason of any breach, arising from the direction (i) if the
direction is contained in a writing (or is oral and immediately confirmed in a
writing) signed by any individual whose name and signature have been submitted
(and not withdrawn) in writing to the Trustee by the Named Fiduciary in the form
attached hereto as Schedule "E" and (ii) if the Trustee reasonably believes the
signature of the individual to be genuine, unless it is clear on the direction's
face that the actions to be taken under the direction would be prohibited by the
fiduciary duty rules of section 404(a) of ERISA or would be contrary to the
terms of the Plan or this Agreement.

         (d) Co-Fiduciary Liability. In any other case, the Trustee shall not be
liable for any loss, or by reason of any breach, arising from any act or
omission of another fiduciary under the Plan except as provided in section
405(a) of ERISA. Without limiting the foregoing, the Trustee shall have no
liability for the acts or omissions of any predecessor or successor trustee.

         (e) Indemnification. The Sponsor shall indemnify the Trustee against,
and hold the Trustee harmless from, any and all loss, damage, penalty,
liability, cost, and expense, including without limitation, reasonable
attorneys' fees and disbursements, that may be incurred by, imposed upon, or
asserted against the Trustee by reason of any claim, regulatory proceeding, or
litigation arising from any act done or omitted to be done by any individual or
person with respect to the Plan or Trust, excepting only any and all loss, etc.,
arising from the Trustee's breach of its fiduciary duties under ERISA.

         (f) Survival. The provisions of this Section 8 shall survive the
termination of this Agreement.

SECTION 9.  RESIGNATION OR REMOVAL OF TRUSTEE.

         (a) Resignation. The Trustee may resign at any time upon sixty (60)
days' notice in writing to the Sponsor, unless a shorter period of notice is
agreed upon by the Sponsor.


                                       18
<PAGE>   20


         (b) Removal. The Sponsor may remove the Trustee at any time upon sixty
(60) days' notice in writing to the Trustee, unless a shorter period of notice
is agreed upon by the Trustee.

SECTION 10.  SUCCESSOR TRUSTEE.

         (a) Appointment. If the office of Trustee becomes vacant for any
reason, the Sponsor may in writing appoint a successor trustee under this
Agreement. The successor trustee shall have all of the rights, powers,
privileges, obligations, duties, liabilities, and immunities granted to the
Trustee under this Agreement. The successor trustee and predecessor trustee
shall not be liable for the acts or omissions of the other with respect to the
Trust.

         (b) Acceptance. When the successor trustee accepts its appointment
under this Agreement, title to and possession of the Trust assets shall
immediately vest in the successor trustee without any further action on the part
of the predecessor trustee. The predecessor trustee shall execute all
instruments and do all acts that reasonably may be necessary or reasonably may
be requested in writing by the Sponsor or the successor trustee to vest title to
all Trust assets in the successor trustee or to deliver all Trust assets to the
successor trustee.

         (c) Corporate Action. Any successor of the Trustee or successor
trustee, through sale or transfer of the business or trust department of the
Trustee or successor trustee, or through reorganization, consolidation, or
merger, or any similar transaction, shall, upon consummation of the transaction,
become the successor trustee under this Agreement.

SECTION 11. TERMINATION. This Agreement may be terminated at any time by the
Sponsor upon sixty (60) days' notice in writing to the Trustee. On the date of
the termination of this Agreement, the Trustee shall forthwith transfer and
deliver to such individual or entity as the Sponsor shall designate, all cash
and assets then constituting the Trust. If, by the termination date, the Sponsor
has not notified the Trustee in writing as to whom the assets and cash are to be
transferred and delivered, the Trustee may bring an appropriate action or
proceeding for leave to deposit the assets and cash in a court of competent
jurisdiction. The Trustee shall be reimbursed by the Sponsor for all costs and
expenses of the action or proceeding including, without limitation, reasonable
attorneys' fees and disbursements.


                                       19
<PAGE>   21


SECTION 12. RESIGNATION, REMOVAL, AND TERMINATION NOTICES. All notices of
resignation, removal, or termination under this Agreement must be in writing and
mailed to the party to which the notice is being given by certified or
registered mail, return receipt requested, to the Sponsor c/o Chief Financial
Officer, Quanex Corporation, 1900 West Loop South, Suite 1500, Houston, TX 77027
and to the Trustee c/o John M. Kimpel, Fidelity Investments, 82 Devonshire
Street, Boston, Massachusetts 02109, or to such other addresses as the parties
have notified each other of in the foregoing manner.

SECTION 13. DURATION. This Trust shall continue in effect without limit as to
time, subject, however, to the provisions of this Agreement relating to
amendment, modification, and termination thereof.

SECTION 14. AMENDMENT OR MODIFICATION. This Agreement may be amended or modified
at any time and from time to time only by an instrument executed by both the
Sponsor and the Trustee. Notwithstanding the foregoing, to reflect increased
operating costs the Trustee may once each calendar year amend Schedule "B"
without the Sponsor's consent upon seventy-five (75) days written notice to the
Sponsor.

SECTION 15. ELECTRONIC SERVICES.

         (a) The Trustee may provide communications and services via electronic
medium ("Electronic Services"), including, but not limited to, Fidelity Plan
Sponsor WebStation, Client Intranet, Client e-mail, interactive software
products or any other information provided in an electronic format. The Sponsor,
its agents and employees agree to keep confidential and not publish, copy,
broadcast, retransmit, reproduce, commercially exploit or otherwise
redisseminate the data, information, software or services without the Trustee's
written consent.

         (b) The Sponsor shall be responsible for installing and maintaining all
Electronic Services on its computer network and/or Intranet upon receipt in a
manner so that the information provided via the Electronic Service will appear
in the same form and content as it appears on the form of delivery, and for any
programming required to accomplish the installation. Materials provided for Plan
Sponsor's intranet web sites shall be installed by the Sponsor and shall be
clearly identified as originating from Fidelity. The Sponsor shall promptly
remove Electronic Services from its computer network and/or Intranet, or replace
the Electronic Service with an updated service provided by the Trustee, upon
written notification (including written notification via facsimile) by the
Trustee.


                                       20
<PAGE>   22


         (c) All Electronic Services shall be provided to the Sponsor without
any express or implied legal warranties or acceptance of legal liability by the
Trustee relative to the use of material or Electronic Services by the Sponsor.
No rights are conveyed to any property, intellectual or tangible, associated
with the contents of the Electronic Services and related material.

         (d) To the extent that any Electronic Services utilize Internet
services to transport data or communications, the Trustee will take, and Plan
Sponsor agrees to follow, reasonable security precautions; however, the Trustee
disclaims any liability for interception of any such data or communications. The
Trustee shall not be responsible for, and makes no warranties regarding access,
speed or availability of Internet or network services. The Trustee shall not be
responsible for any loss or damage related to or resulting from any changes or
modifications to the electronic material after delivering it to the Plan
Sponsor.

SECTION 16.  GENERAL.

         (a) Performance by Trustee, its Agents or Affiliates. The Sponsor
acknowledges and authorizes that the services to be provided under this
Agreement shall be provided by the Trustee, its agents or affiliates, including
Fidelity Investments Institutional Operations Company or its successor, and that
certain of such services may be provided pursuant to one or more other
contractual agreements or relationships.

         (b) Delegation by Employer. By authorizing the assets of any Plan as to
which it is an Employer to be deposited in the Trust, each Employer, other than
the Sponsor, hereby irrevocably delegates and grants to the Sponsor full and
exclusive power and authority to exercise all of the powers conferred upon the
Sponsor and each Employer by the terms of this Agreement, and to take or refrain
from taking any and all action which such Employer might otherwise take or
refrain from taking with respect to this Agreement, including the sole and
exclusive power to exercise, enforce or waive any rights whatsoever which such
Employer might otherwise have with respect to the Trust, and irrevocably
appoints the Sponsor as its agent for all purposes under this Agreement. The
Trustee shall have no obligation to account to any such Employer or to follow
the instructions of or otherwise deal with any such Employer, the intention
being that the Trustee shall deal solely with the Sponsor.


                                       21
<PAGE>   23


         (c) Entire Agreement. This Agreement contains all of the terms agreed
upon between the parties with respect to the subject matter hereof.

         (d) Waiver. No waiver by either party of any failure or refusal to
comply with an obligation hereunder shall be deemed a waiver of any other or
subsequent failure or refusal to so comply.

         (e) Successors and Assigns. The stipulations in this Agreement shall
inure to the benefit of, and shall bind, the successors and assigns of the
respective parties.

         (f) Partial Invalidity. If any term or provision of this Agreement or
the application thereof to any person or circumstances shall, to any extent, be
invalid or unenforceable, the remainder of this Agreement, or the application of
such term or provision to persons or circumstances other than those as to which
it is held invalid or unenforceable, shall not be affected thereby, and each
term and provision of this Agreement shall be valid and enforceable to the
fullest extent permitted by law.

         (g) Section Headings. The headings of the various sections and
subsections of this Agreement have been inserted only for the purposes of
convenience and are not part of this Agreement and shall not be deemed in any
manner to modify, explain, expand or restrict any of the provisions of this
Agreement.

SECTION 17.  GOVERNING LAW.

         (a) Massachusetts Law Controls. This Agreement is being made in the
Commonwealth of Massachusetts, and the Trust shall be administered as a
Massachusetts trust. The validity, construction, effect, and administration of
this Agreement shall be governed by and interpreted in accordance with the laws
of the Commonwealth of Massachusetts, except to the extent those laws are
superseded under section 514 of ERISA.

         (b) Trust Agreement Controls. The Trustee is not a party to the Plan,
and in the event of any conflict between the provisions of the Plan and the
provisions of this Agreement, the provisions of this Agreement shall control.

SECTION 18. PLAN QUALIFICATION. The Sponsor shall be responsible for verifying
that while any assets of a particular Plan are held in the Trust, the Plan (i)
is qualified within the meaning of section 401(a) of the


                                       22
<PAGE>   24


Code; (ii) is permitted by existing or future rulings of the United States
Treasury Department to pool its funds in a group trust; and (iii) permits its
assets to be commingled for investment purposes with the assets of other such
plans by investing such assets in this Trust. If any Plan ceases to be qualified
within the meaning of section 401(a) of the Code, the Sponsor shall notify the
Trustee as promptly as is reasonable. Upon receipt of such notice, the Trustee
shall promptly segregate and withdraw from the Trust, the assets which are
allocable to such disqualified Plan, and shall dispose of such assets in the
manner directed by the Sponsor.

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
executed by their duly authorized officers as of the day and year first above
written.

                                       QUANEX CORPORATION

Attest:  ______________________        By:    _______________________________
         Secretary
                                       Name:  _______________________________

                                       Title: _______________________________

                                       Date:  _______________________________


                                       FIDELITY MANAGEMENT TRUST COMPANY

Attest:  ______________________        By:    ______________________________
         Assistant Clerk
                                       Name:  ______________________________

                                       Title: ______________________________

                                       Date:  ______________________________



                                       23
<PAGE>   25


                                  SCHEDULE "A"

                             ADMINISTRATIVE SERVICES

Administration

*    Establishment and maintenance of Participant account and election
     percentages.

*    Maintenance of the following investment options:

        - Quanex Corporation Stock Fund
        - Fidelity Balanced Fund
        - Fidelity Contrafund
        - Fidelity Growth & Income Portfolio
        - Fidelity Low-Priced Stock Fund
        - Fidelity Magellan Fund
        - Fidelity Money Market Trust: Retirement Government Money Market
                Portfolio
        - Fidelity Overseas Fund
        - Fidelity Puritan Fund
        - Fidelity Asset Manager
        - Managed Income Portfolio
        - Neuberger & Berman Partners Trust
        - Templeton Foreign Fund
        - Fidelity Blue Chip Growth Fund
        - Fidelity Retirement Growth Fund

*    Maintenance of the following money classifications for the Quanex
     Corporation Employee Savings Plan:

        - Elective Deferrals
        - Employee After-tax
        - Company Match
        - Rollover
        - Qualified Non-elective Employer Contribution

*    Maintenance of the following money classifications for the Quanex
     Corporation Hourly Bargaining Unit Employees Savings Plan:

        - Elective Deferrals
        - Employee After-tax
        - Company Match
        - Rollover
        - Supplemental Employer Contributions

*    Maintenance of the following money classifications for the Piper Impact
     401(k) Plan:

        - Employee Deferral



<PAGE>   26

        - Employer Match
        - Supplemental Employer Contribution
        - Rollover

*    Maintenance of the following money classifications for the
     Nichols-Homeshield 401(k) Savings Plan:

        - Salary Deferral Contribution Account
        - Supplemental Employer Contribution Account
        - Rollover Account
        - Qualified Non-elective Employer Contribution Account

*    Maintenance of the following money classifications for the
     Nichols-Homeshield 401(k) Savings Plan for Hourly Davenport Employees:

        - Salary Deferral Contribution Account
        - Supplemental Employer Contribution Account
        - Rollover Account
        - Qualified Non-elective Employer Contribution Account

     The Trustee will provide the recordkeeping and administrative services set
     forth on this Schedule "A" and as detailed in the Plan Administrative
     Manual and no others.

A)       PROVIDE PARTICIPANT TELEPHONE SERVICES

         1. Fidelity registered representatives are available from 8:30 a.m. -
         12:00 midnight ET each business day to provide toll free telephone
         service for Participant inquiries and transactions. Additionally,
         Participants have 24 hour account balance and transaction inquiry
         access utilizing our automated voice response system and the internet.

         2. For security purposes, all calls are recorded. In addition, several
         levels of security are available including the verification of a
         Personal Identification Number (PIN) and/or any other indicative data
         resident on the system.

         3. Through our telephone services, Fidelity provides the following
         services:

               o Provide Plan investment option information.
               o Maintain Plan specific provisions.
               o Process exchanges (transfers) between investment options on a
                 daily basis.
               o Maintain and process changes to Participants' contribution
                 allocations for all money sources.
               o Allow Participants to change their deferral and after-tax
                 percentages and provide updates via EDT for customer to
                 apply to its payrolls accordingly.
               o Consult with Participants in various loan scenarios and
                 generate all documentation.
               o Process all Participant loan and withdrawal requests via
                 Fidelity's toll-free telephone service according to Plan
                 provisions on a daily basis.
               o Process in-service withdrawals via telephone due to certain
                 circumstances previously approved by the Sponsor.
               o Process hardship withdrawals via telephone as directed and
                 approved by the Sponsor.


                                       ii
<PAGE>   27


               o Enroll new Participants via telephone; provide confirmation of
                 enrollment within five (5) days of the request.

B)       PLAN ACCOUNTING

         1. Process payroll contributions according to payroll frequency via
         electronic data transfer (EDT), consolidated magnetic tape or diskette.
         The data format will be provided by Fidelity.

         2. Provide Plan and Participant level accounting for up to nine (9)
         money classifications for the Plan.

         3. Audit and reconcile the Plan and Participant accounts daily.

         4. Provide daily Plan and Participant level accounting for the Plan
         investment options.

         5. Reconcile and process Participant withdrawal requests as approved
         and directed by the Sponsor. All requests are paid based on the current
         market values of Participants' accounts, not advanced or estimated
         values. A distribution report will accompany each check.

         6. Track individual Participant loans; process loan withdrawals;
         re-invest loan repayments; and prepare and deliver comprehensive
         reports to the Sponsor to assist in the administration of Participant
         loans.

         7. Fidelity's Guaranteed Investments Daily Equity System (GUIDE) is an
         automatic Investment Contract daily portfolio accounting system. GUIDE
         provides the Sponsor with daily valuation of its Plan assets whether
         individually managed or in our Managed Income Portfolio.

         8. Maintain and process changes to Participants' prospective and
         existing investment mix elections via Fidelity's toll-free telephone
         service.

C)       PARTICIPANT REPORTING

         1. Mail confirmation to Participants of all transactions initiated via
         Fidelity Telephone Services within three (3) calendar days of the
         transaction.

         2. Prepare and mail via first class to each Plan Participant a
         quarterly detailed Participant statement reflecting all activity for
         the period. Statements will be mailed no later than twenty (20)
         calendar days after each quarter end.

         3. Mail required 402(f) notification for distribution from the Plan.
         This notice advises Participants of the tax consequences of their Plan
         distributions.

D)       PLAN REPORTING

         1. Prepare, reconcile and deliver a monthly Trial Balance Report
         presenting all money classes and investments. This report is based on
         the market value as of the last business day of the month. The report
         will be delivered not later than twenty (20) days after the end of each
         month in the absence of unusual circumstances.


                                      iii
<PAGE>   28


         2. Prepare, reconcile and deliver a Quarterly Administrative Report
         presenting both on a Participant and a total Plan basis all money
         classes, investment positions and a summary of all activity of the
         Participant and Plan as of the last business day of the quarter. The
         report will be delivered not later than twenty (20) days after the end
         of each quarter in the absence of unusual circumstances.

E)       GOVERNMENT REPORTING

         1. Process year-end tax reports for Participants - 1099R, as well as
         financial reporting to assist in the preparation of Form 5500.

F)       COMMUNICATION SERVICES

         1. Employee communications describing available investment options,
         including multimedia informational materials and group presentations.

G)       OTHER

         1. Performance of non-discrimination limitation testing upon request.
         In order to obtain this service, the client shall be required to
         provide the information identified in the Fidelity Discrimination
         Testing Package Guidelines.

         2. Monitor and process required minimum distribution amounts (MRD) as
         follows: the Trustee will notify the MRD Participant and, upon
         notification from the MRD Participant, will use the MRD Participant's
         information to process their distributions. If the MRD Participant does
         not respond to the Trustee's notification, the Sponsor directs the
         Trustee to automatically begin the required distributions for the
         Participant.

         3. The Fidelity Recordkeeping System is available on-line to the
         Sponsor via our Plan Sponsor Webstation ("PSW"). PSW is a graphical,
         Windows-based application that provides current plan and
         participant-level information, including indicative data, account
         balances, activity and history. PSW also provides Sponsors with the
         ability to instruct the Trustee to process particular transactions.

         4. NetBenefits: Plan participants may access their accounts and conduct
         transactions via the Internet's World Wide Web, including obtaining
         current account balances, exchanges, contributions, dividend/capital
         gains, new loans and repayments, new withdrawals, quotes on all plan
         level investment options, fund performance on all plan level investment
         options, and Plan literature ordering


QUANEX CORPORATION                  FIDELITY MANAGEMENT TRUST COMPANY



By:  _______________________        By:  ________________________________
                        Date             Vice President              Date


                                       iv
<PAGE>   29


                                  SCHEDULE "B"

                                  FEE SCHEDULE

<TABLE>
<S>                                    <C>
Annual Participant Fee:                $15.00 per Participant* per year, billed and
                                       payable quarterly.

Loan Fee:                              Establishment fee of $35.00 per loan account;
                                       annual fee of $15.00 per loan account.

Minimum Required Distribution:         $25.00 per Participant per MRD withdrawal.

Plan Sponsor Webstation (PSW):         Two (2) user IDs provided free of charge, each
                                       additional user ID, $500 per year.

Return of Excess Contribution Fee:     $25.00 per Participant, one-time charge per
                                       calculation and check generation.

Non-Fidelity Mutual Funds:             .35% annual administration fee on the following
                                       Non-Fidelity Mutual Fund assets which are
                                       equity/balanced funds:  AMR Funds, Calvert Funds,
                                       Franklin/Templeton Funds, Founders Funds, Pilgrim
                                       Baxter Funds and Warburg Pincus Funds.  .25% annual
                                       administration fee on all other Non-Fidelity Mutual
                                       Fund assets (to be paid by the Non-Fidelity Mutual
                                       Fund vendor.)
</TABLE>


o    Other Fees: separate charges for optional non-discrimination testing,
     extraordinary expenses resulting from large numbers of simultaneous manual
     transactions, from errors not caused by Fidelity, reports not contemplated
     in this Agreement, or extraordinary and/or duplicative expenses associated
     with electronic services. The Administrator may withdraw reasonable
     administrative fees from the Trust by written direction to the Trustee.

*    This fee will be imposed pro rata for each calendar quarter, or any part
     thereof, that it remains necessary to keep a Participant's account(s) as
     part of the Plan's records, e.g., vested, deferred, forfeiture, top-heavy
     and terminated Participants who must remain on file through calendar
     year-end for 1099-R reporting purposes.

TRUSTEE FEE

o    To the extent that assets are invested in Mutual Funds, 0.02% per year
     payable pro rata quarterly on the basis of such assets in the Trust as of
     the calendar quarter's last valuation date, but no less than $2,500.00 nor
     more than $5,000.00 per year.


                                       v
<PAGE>   30


o    To the extent that assets are invested in Sponsor Stock, 0.25% of such
     assets in the Trust payable pro rata quarterly on the basis of such assets
     as of the calendar quarter's last valuation date, but no less than $10,000
     per year.

QUANEX CORPORATION                  FIDELITY MANAGEMENT TRUST COMPANY



By:  __________________________     By:  ____________________________
                           Date          Vice President          Date


                                       vi
<PAGE>   31


                                  SCHEDULE "C"

                               INVESTMENT OPTIONS


        In accordance with Section 5(b), the Named Fiduciary hereby directs the
Trustee that Participants' individual accounts may be invested in the following
investment options:

        -  Quanex Corporation Stock Fund
        -  Fidelity Balanced Fund
        -  Fidelity Contrafund
        -  Fidelity Growth & Income Portfolio
        -  Fidelity Low-Priced Stock Fund
        -  Fidelity Magellan Fund
        -  Fidelity Money Market Trust: Retirement Government Money Market
                    Portfolio
        -  Fidelity Overseas Fund
        -  Fidelity Puritan Fund
        -  Fidelity Asset Manager
        -  Managed Income Portfolio
        -  Neuberger & Berman Partners Trust
        -  Templeton Foreign Fund
        -  Fidelity Blue Chip Growth Fund
        -  Fidelity Retirement Growth Fund



        The investment option referred to in Section 5(c) and Section
5(e)(v)(B)(5) shall be Fidelity Money Market Trust: Retirement Government Money
Market Portfolio.

QUANEX CORPORATION


By:  ______________________
                       Date


                                      vii
<PAGE>   32


                                  SCHEDULE "D"

                          [Administrator's Letterhead]
                                                                          [DATE]

Mr. David Phillips
Fidelity Investments Institutional Operations Company, Inc.
82 Devonshire Street - MM3H
Boston, Massachusetts  02109

                                 [Name of Plan]

                         *** NOTE: This schedule should contain names and
                         signatures for ALL individuals who will be providing
                         directions to Fidelity representatives in connection
                         with the Plan.

                         Fidelity representatives will be unable to accept
                         directions from any individual whose name does not
                         appear on this schedule.***

Dear Mr. Phillips:

        This letter is sent to you in accordance with Section 8(b) of the Trust
Agreement, dated as of [date], between [name of Plan Sponsor] and Fidelity
Management Trust Company. [I or We] hereby designate [name of individual], [name
of individual], and [name of individual], as the individuals who may provide
directions, on behalf of the Administrator, upon which Fidelity Management Trust
Company shall be fully protected in relying. Only one such individual need
provide any direction. The signature of each designated individual is set forth
below and certified to be such.

        You may rely upon each designation and certification set forth in this
letter until [I or we] deliver to you written notice of the termination of
authority of a designated individual.

                                            Very truly yours,

                                            [SPONSOR]


                                            By


[signature of designated individual]
[name of designated individual]


[signature of designated individual]
[name of designated individual]


[signature of designated individual]
[name of designated individual]


                                      viii
<PAGE>   33


                                  SCHEDULE "E"

                         [Named Fiduciary's Letterhead]
                                                                          [DATE]

Mr. David Phillips
Fidelity Investments Institutional Operations Company, Inc.
82 Devonshire Street - MM3H
Boston, Massachusetts  02109

                                 [Name of Plan]

Dear Mr. Phillips:

        This letter is sent to you in accordance with Section 8(c) of the Trust
Agreement, dated as of [date], between [name of Plan Sponsor] and Fidelity
Management Trust Company. [I or We] hereby designate [name of individual], [name
of individual], and [name of individual], as the individuals who may provide
directions, on behalf of the Named Fiduciary, upon which Fidelity Management
Trust Company shall be fully protected in relying. Only one such individual need
provide any direction. The signature of each designated individual is set forth
below and certified to be such.

        You may rely upon each designation and certification set forth in this
letter until [I or we] deliver to you written notice of the termination of
authority of a designated individual.

                                              Very truly yours,

                                              [NAMED FIDUCIARY]


                                              By


[signature of designated individual]
[name of designated individual]


[signature of designated individual]
[name of designated individual]


[signature of designated individual]
[name of designated individual]


                                       ix
<PAGE>   34


                                  SCHEDULE "G"


                          TELEPHONE EXCHANGE GUIDELINES


The following telephone exchange guidelines are currently employed by Fidelity
Investments Institutional Operations Company, Inc. (FIIOC).

Telephone exchange hours via a Fidelity Representative are 8:30 a.m. (ET) to
12:00 midnight (ET) on each business day. A "business day" is any day on which
the New York Stock Exchange ("NYSE") is open. Exchanges via the Internet and
Fidelity's voice response system are intended to be available virtually 24 hours
a day.

FIIOC reserves the right to change these telephone exchange guidelines at its
discretion.

Note: The NYSE's normal closing time is 4:00 p.m. (ET); in the event the NYSE
alters its closing time, all references below to 4:00 p.m. shall mean the NYSE
closing time as altered.

                                  MUTUAL FUNDS

        EXCHANGES BETWEEN MUTUAL FUNDS

        Participants may call on any business day to exchange between the mutual
        funds. If the request is received before 4:00 p.m. (ET), it will receive
        that day's trade date. Calls received after 4:00 p.m. (ET) will be
        processed on a next day basis.

                            MANAGED INCOME PORTFOLIO

I.       EXCHANGES BETWEEN MUTUAL FUNDS AND MANAGED INCOME PORTFOLIO

         Participants who wish to exchange between a mutual fund and the Managed
         Income Portfolio may call on any business day. If the request is
         received before 4:00 p.m. (ET), it will receive that day's trade date.
         Calls received after 4:00 p.m. (EST) will be processed on a next day
         basis.

II.      EXCHANGE RESTRICTIONS

         Participants will not be permitted to make direct transfers from the
         Managed Income Portfolio into a competing fund. Participants who wish
         to exchange from the Managed Income Portfolio into a competing fund
         must first exchange into a non-competing fund for a period of 90 days.

                          QUANEX CORPORATION STOCK FUND

I.       EXCHANGES BETWEEN MUTUAL FUNDS AND SPONSOR STOCK FUND

         Participants may call on any business day to exchange between the
         mutual funds and the Sponsor Stock Fund. If the request is received
         before 4:00 p.m. (ET), it will receive that day's trade date. Calls
         received after 4:00 p.m. (ET) will be processed on a next day basis.


                                       x
<PAGE>   35


II.      EXCHANGES BETWEEN SPONSOR STOCK FUND AND MANAGED INCOME PORTFOLIO

         Participants who wish to exchange between the Sponsor Stock Fund and
         the Managed Income Portfolio may call on any business day. If the
         request is received before 4:00 p.m. (ET), it will receive that day's
         trade date. Calls received after 4:00 p.m. (ET) will be processed on a
         next day basis.

III.     EXCHANGE RESTRICTIONS

         Investments in the Sponsor Stock Fund will consist primarily of shares
         of Sponsor Stock. In order to satisfy daily Participant requests for
         exchanges, loans and withdrawals, the Stock Fund will also hold cash or
         other short-term liquid investments in an amount that has been agreed
         to in writing by the Sponsor and the Trustee. The Trustee will be
         responsible for ensuring that the percentage of these investments falls
         within the agreed upon range over time. However, if there is
         insufficient liquidity in the Sponsor Stock Fund to allow for such
         activity, the Trustee will sell shares of Sponsor Stock in the open
         market. Exchange and redemption transactions will be processed as soon
         as proceeds from the sale of Sponsor Stock are received.

QUANEX CORPORATION




By:  _____________________
                      Date


                                       xi
<PAGE>   36


                                  SCHEDULE "H"

              OPERATIONAL GUIDELINES FOR NON-FIDELITY MUTUAL FUNDS

    PRICING
    By 7:00 p.m. Eastern Time ("ET") each Business Day, the Non-Fidelity Mutual
    Fund Vendor (Fund Vendor) will input the following information ("Price
    Information") into the Fidelity Participant Recordkeeping System ("FPRS")
    via the remote access price screen that Fidelity Investments Institutional
    Operations Company, Inc. ("FIIOC"), an affiliate of the Trustee, has
    provided to the Fund Vendor: (1) the net asset value for each Fund at the
    Close of Trading, (2) the change in each Fund's net asset value from the
    Close of Trading on the prior Business Day, and (3) in the case of an income
    fund or funds, the daily accrual for interest rate factor ("mil rate").
    FIIOC must receive Price Information each Business Day (a "Business Day" is
    any day the New York Stock Exchange is open). If on any Business Day the
    Fund Vendor does not provide such Price Information to FIIOC, FIIOC shall
    pend all associated transaction activity in the Fidelity Participant
    Recordkeeping System ("FPRS") until the relevant Price Information is made
    available by Fund Vendor.

    TRADE ACTIVITY AND WIRE TRANSFERS
    By 7:00 a.m. ET each Business Day following Trade Date ("Trade Date plus
    One"), FIIOC will provide, via facsimile, to the Fund Vendor a consolidated
    report of net purchase or net redemption activity that occurred in each of
    the Funds up to 4:00 p.m. ET on the prior Business Day. The report will
    reflect the dollar amount of assets and shares to be invested or withdrawn
    for each Fund. FIIOC will transmit this report to the Fund Vendor each
    Business Day, regardless of processing activity. In the event that data
    contained in the 7:00 a.m. ET facsimile transmission represents estimated
    trade activity, FIIOC shall provide a final facsimile to the Fund Vendor by
    no later than 9:00 a.m. ET. Any resulting adjustments shall be processed by
    the Fund Vendor at the net asset value for the prior Business Day.

    The Fund Vendor shall send via regular mail to FIIOC transaction confirms
    for all daily activity in each of the Funds. The Fund Vendor shall also send
    via regular mail to FIIOC, by no later than the fifth Business Day following
    calendar month close, a monthly statement for each Fund. FIIOC agrees to
    notify the Fund Vendor of any balance discrepancies within twenty (20)
    Business Days of receipt of the monthly statement.


                                      xii
<PAGE>   37


    For purposes of wire transfers, FIIOC shall transmit a daily wire for
    aggregate purchase activity and the Fund Vendor shall transmit a daily wire
    for aggregate redemption activity, in each case including all activity
    across all Funds occurring on the same day.

    PROSPECTUS DELIVERY
    FIIOC shall be responsible for the timely delivery of Fund prospectuses and
    periodic Fund reports ("Required Materials") to Plan participants, and shall
    retain the services of a third-party vendor to handle such mailings. The
    Fund Vendor shall be responsible for all materials and production costs, and
    hereby agrees to provide the Required Materials to the third-party vendor
    selected by FIIOC. The Fund Vendor shall bear the costs of mailing annual
    Fund reports to Plan participants. FIIOC shall bear the costs of mailing
    prospectuses to Plan participants.

    PROXIES
    The Fund Vendor shall be responsible for all costs associated with the
    production of proxy materials. FIIOC shall retain the services of a
    third-party vendor to handle proxy solicitation mailings and vote
    tabulation. Expenses associated with such services shall be billed directly
    to the Fund Vendor by the third-party vendor.

    PARTICIPANT COMMUNICATIONS
    The Fund Vendor shall provide internally-prepared fund descriptive
    information approved by the Funds' legal counsel for use by FIIOC in its
    written Participant communication materials. FIIOC shall utilize historical
    performance data obtained from third-party vendors (currently Morningstar,
    Inc., FACTSET Research Systems and Lipper Analytical Services) in telephone
    conversations with plan Participants and in quarterly Participant
    statements. The Sponsor hereby consents to FIIOC's use of such materials and
    acknowledges that FIIOC is not responsible for the accuracy of such
    third-party information. FIIOC shall seek the approval of the Fund Vendor
    prior to retaining any other third-party vendor to render such data or
    materials under this Agreement.

    COMPENSATION
    FIIOC shall be entitled to fees as set forth in a separate agreement with
    the Fund Vendor.


                                      xiii
<PAGE>   38


                                  SCHEDULE "I"

                             [Sponsor's Letterhead]


Mr. David Phillips
Fidelity Investments Institutional Operations Company, Inc.
82 Devonshire Street
Boston, Massachusetts  02109

                                 [Name of Plan]
Dear Mr. Phillips:

         This letter is sent to you in accordance with Section 8(a) of the Trust
Agreement dated as of the [ ] day of [ ], 199X, between [ ] and Fidelity
Management Trust Company.

         Each of the plans identified below is a tax-qualified defined
contribution plan which meets the requirements of Section 18 of said Trust
Agreement and which is maintained by the undersigned, or one of its subsidiaries
or affiliates, for the benefit of their eligible employees. Each such plan is
hereby designated as a "Plan" for purposes of said Trust Agreement. The
following individuals or entities are the Administrator and Named Fiduciary
(ies) of said Plan(s).

         Plans Administrator                 Named Fiduciary(ies)
         ----- -------------                 ----- --------------




         We hereby further certify that each Employer with respect to each of
the foregoing Plan(s) has authorized the assets of such Plan to be deposited in
the Trust and, as a result, is bound by Section 16(b) of said Trust Agreement.

         You may rely upon the foregoing designations and certifications until
we deliver to you written notice of a change in any of the information set forth
therein.

                                            Very truly yours,

                                            [SPONSOR]


                                            By


                                      xiv

<PAGE>   1

                                                                     EXHIBIT 4.9


                   FIRST AMENDMENT TO TRUST AGREEMENT BETWEEN
                     FIDELITY MANAGEMENT TRUST COMPANY AND
                               QUANEX CORPORATION

         THIS FIRST AMENDMENT, dated as of the first day of November, 1999, by
and between Fidelity Management Trust Company (the "Trustee") and Quanex
Corporation (the "Sponsor").


                                  WITNESSETH:

         WHEREAS, the Trustee and the Sponsor heretofore entered into a Trust
Agreement dated February 1, 1999 with regard to the Quanex Corporation
Employee Savings Plan, the Quanex Corporation Hourly Bargaining Unit Employees
Savings Plan, the Piper Impact 401(k) Plan, the Nichols-Homeshield 401(k)
Savings Plan and the Nichols-Homeshield 401(k) Savings Plan for Hourly
Davenport Employees (the "Plan"); and

         WHEREAS, the Trustee and the Sponsor now desire to amend said Trust
Agreement as provided for in Section 14 thereof;

         NOW THEREFORE, in consideration of the above premises, the Trustee and
the Sponsor hereby amend the Trust Agreement by:

         (1)    Amending Schedule "G" by adding the following to the Exchange
                Restrictions for the Quanex Corporation Stock Fund, as follows:

                    Participants who exchange into the Sponsor Stock Fund must
                    wait a minimum of forty-five (45) days prior to exchanging
                    out of the Sponsor Stock Fund.

                    Participants who exchange out of the Sponsor Stock Fund must
                    wait a minimum of forty-five (45) days prior to exchanging
                    back into the Sponsor Stock Fund.

         IN WITNESS WHEREOF, the Trustee and the Sponsor have caused this First
Amendment to be executed by their duly authorized officers effective as of the
day and year first above written.

QUANEX CORPORATION                          FIDELITY MANAGEMENT TRUST COMPANY


By:                                         By:
    --------------------------------            --------------------------------
                             Date               Vice President           Date

<PAGE>   1


                                                                    EXHIBIT 23.1


                         INDEPENDENT AUDITORS' CONSENT

We consent to the incorporation by reference in this Post-Effective Amendment
No. 2 to Registration Statement No. 333-22977 of Quanex Corporation on Form S-8
of our reports dated November 23, 1998 and June 1, 1999, appearing in the Annual
Report on Form 10-K of Quanex Corporation for the fiscal year ended October 31,
1998 and in the Annual Report on Form 11-K of Piper Impact 401(K) for the year
ended December 31, 1998, respectively.




DELOITTE & TOUCHE LLP

Houston, Texas
October 15, 1999



<PAGE>   1
                                                                    EXHIBIT 24.1

                            MASTER POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints Vernon E. Oeschsle , James H. Davis, Wayne M.
Rose, Viren M. Parikh and Thomas R. Royce, and each of them, either one of whom
may act without joinder of the other, his true and lawful attorneys-in-fact and
agents, with full power of substitution and resubstitution, for him and in his
name, place and stead, in any and all capacities, to sign any or all amendments
(including post-effective amendments) to the Registration Statements listed
below, and to file the same, with all exhibits thereto and other documents in
connection therewith, with the Securities and Exchange Commission, granting unto
said attorneys-in-fact and agents, and each of them, full power and authority to
do and perform each and every act and thing requisite and necessary to be done,
as fully to all intents and purposes as he might or could do in person, hereby
ratifying and confirming all that said attorneys-in-fact and agents, and each of
them, or the substitute to substitutes of any or all of them, may lawfully do or
cause to be done by virtue hereof.

          Registration Statement No. 333-66777, filed November 4, 1998, relating
          to the Quanex Corporation 1997 Key Employee Stock Option Plan and the
          Quanex Corporation 1997 Non-Employee Director Sock Option Plan

          Registration Statement No. 333-22977, filed March 7, 1997, as amended
          by Post- Effective Amendment No. 1, filed February 2, 1999, relating
          to the Piper Impact 401(k) Plan

          Registration Statement No. 333-18267, filed December 19, 1996,
          relating to the Quanex Corporation 1996 Employee Stock Option and
          Restricted Stock Plan and the Quanex Corporation Deferred Compensation
          Plan

          Registration Statement No. 33-57235, filed January 11, 1995, relating
          to the Quanex Corporation Employee Stock Purchase Plan

          Registration Statement No. 33-54081, filed June 10, 1994, as amended
          by Post- Effective Amendment No. 1 filed February 2, 1999, relating to
          the Nichols- Homeshield 401(k) Savings Plan

          Registration Statement No. 33-54085, filed June 10, 1994, as amended
          by Post- Effective Amendment No. 1 filed February 2, 1999, relating to
          the Nichols- Homeshield 401(k) Savings Plan for Davenport Hourly
          Employees

          Registration Statement No. 33-54087, filed June 10, 1994, relating to
          the Quanex Corporation Employee Stock Option and Restricted Stock Plan

          Registration Statement No. 33-46824, filed March 30, 1992, as amended
          by Post- Effective Amendment No. 1 filed February 2, 1999, relating to
          the Quanex Corporation Hourly Bargaining Unity Employee Savings Plan

<PAGE>   2

          Registration Statement No. 33-38702, filed January 25, 1991, as
          amended by Post- Effective Amendment No. 1 filed February 2, 1999,
          relating to the Quanex Corporation Employee Savings Plan

          Registration Statement No. 33-35128, filed June 4, 1990, relating to
          the Quanex Corporation 1989 Non-Employee Director Stock Option Plan

          Registration Statement No. 33-29585, filed June 29, 1989, relating to
          the Quanex Corporation 1988 Stock Option Plan

          Registration Statement No. 33-22550, filed June 15, 1988, relating to
          the Quanex Corporation 1987 Non-Employee Director Stock Option Plan

          Registration Statement No. 33-23474, as amended by Post-Effective
          Amendment No. 1 and Post-Effective Amendment No. 2 filed June 28,
          1989, relating to the Quanex Corporation 1978 Stock Option Plan

          Registration Statement No. 333-36635, filed September 29, 1997,
          relating to the Quanex Corporation Deferred Compensation Trust


Dated: February 25, 1999



                                        /s/ VERNON E.OECHSLE
                                            ------------------------------------
                                            Vernon E. Oechsle


                                        /s/ DONALD G. BARGER, JR.
                                            ------------------------------------
                                            Donald G. Barger, Jr.


                                        /s/ SUSAN F. DAVIS
                                            ------------------------------------
                                            Susan F. Davis


                                        /s/ RUSSELL M. FLAUM
                                            ------------------------------------
                                            Russell M. Flaum


                                        /s/ JOHN D. O'CONNER
                                            ------------------------------------
                                            John D. O'Connell

<PAGE>   3

                                        /s/ CARL E. PFEIFFER
                                            ------------------------------------
                                            Carl E. Pfeiffer


                                        /s/ VINCENT R. SCORSONE
                                            ------------------------------------
                                            Vincent R. Scorsone


                                        /s/ MICHAEL J. SEBASTIAN
                                            ------------------------------------
                                            Michael J. Sebastian


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