<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<MULTIPLIER> 1,000

<S>                             <C>
<PERIOD-TYPE>                   9-MOS
<FISCAL-YEAR-END>                          SEP-30-2000
<PERIOD-START>                             SEP-26-1999
<PERIOD-END>                               JUN-24-2000
<CASH>                                             334
<SECURITIES>                                         0
<RECEIVABLES>                                   31,588
<ALLOWANCES>                                     1,068<F1>
<INVENTORY>                                     14,263
<CURRENT-ASSETS>                                50,305
<PP&E>                                         115,478
<DEPRECIATION>                                  80,011
<TOTAL-ASSETS>                                  96,907
<CURRENT-LIABILITIES>                           27,207
<BONDS>                                              0
                                0
                                          0
<COMMON>                                         3,750
<OTHER-SE>                                      59,814<F2>
<TOTAL-LIABILITY-AND-EQUITY>                    96,907
<SALES>                                        136,847
<TOTAL-REVENUES>                               136,847
<CGS>                                          102,061
<TOTAL-COSTS>                                  102,061
<OTHER-EXPENSES>                                23,628
<LOSS-PROVISION>                                   114
<INTEREST-EXPENSE>                                 247
<INCOME-PRETAX>                                 10,843
<INCOME-TAX>                                     3,806
<INCOME-CONTINUING>                              7,037
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                     7,037
<EPS-BASIC>                                       2.16
<EPS-DILUTED>                                     2.10
<FN>
<F1>ACCOUNTS RECEIVABLE ARE NET OF ALLOWANCES
<F2>OTHER SE INCLUDES TREASURY STOCK
</FN>


</TABLE>



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