
<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   6-MOS                   6-MOS
<FISCAL-YEAR-END>                          DEC-26-1998             DEC-27-1997
<PERIOD-START>                             DEC-28-1997             DEC-29-1996
<PERIOD-END>                               JUN-27-1998             JUN-28-1997
<CASH>                                           1,191                     762
<SECURITIES>                                         0                       0
<RECEIVABLES>                                   18,830                  20,283
<ALLOWANCES>                                       733                     704
<INVENTORY>                                     18,253                  19,305
<CURRENT-ASSETS>                                37,915                  44,267
<PP&E>                                          64,686                  74,767
<DEPRECIATION>                                  34,384                  35,172
<TOTAL-ASSETS>                                  73,629                  85,682
<CURRENT-LIABILITIES>                           19,368                  20,394
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                         5,387                   5,379
<OTHER-SE>                                      19,307                  30,672
<TOTAL-LIABILITY-AND-EQUITY>                    73,629                  85,682
<SALES>                                         32,228                  34,185
<TOTAL-REVENUES>                                32,228                  34,185
<CGS>                                           26,060                  29,318
<TOTAL-COSTS>                                   30,536                  33,175
<OTHER-EXPENSES>                                    29                     (93)
<LOSS-PROVISION>                                     0                      59
<INTEREST-EXPENSE>                                 422                     491
<INCOME-PRETAX>                                  1,241                     553
<INCOME-TAX>                                       493                     213
<INCOME-CONTINUING>                                748                     340
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                       748                     340
<EPS-PRIMARY>                                     0.14                    0.06
<EPS-DILUTED>                                     0.14                    0.06
        

</TABLE>
