<TABLE> <S> <C>

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

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1997             DEC-31-1997             DEC-31-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997
<CASH>                                           5,559                   4,527                   6,237
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                  120,532                 113,410                 113,661
<ALLOWANCES>                                   (6,247)                 (5,646)                 (5,592)
<INVENTORY>                                    151,941                 159,315                 180,696
<CURRENT-ASSETS>                               284,389                 285,469                 311,725
<PP&E>                                         162,845                 168,163                 172,477
<DEPRECIATION>                                (92,386)                (94,872)                (98,169)
<TOTAL-ASSETS>                                 380,958                 378,045                 405,244
<CURRENT-LIABILITIES>                           72,722                  80,746                 102,898
<BONDS>                                              0                       0                       0
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                        17,149                  17,156                  17,158
<OTHER-SE>                                     174,610                 184,537                 182,579
<TOTAL-LIABILITY-AND-EQUITY>                   380,958                 378,045                 405,244
<SALES>                                        171,541                 343,063                 485,398
<TOTAL-REVENUES>                               171,832                 343,291                 485,510
<CGS>                                          125,160                 245,536                 346,863
<TOTAL-COSTS>                                  125,160                 245,536                 346,863
<OTHER-EXPENSES>                                35,121                  70,437                 103,911
<LOSS-PROVISION>                                   540                   1,041                   1,573
<INTEREST-EXPENSE>                               2,519                   5,198                   7,772
<INCOME-PRETAX>                                  8,492                  21,079                  25,391
<INCOME-TAX>                                     2,630                   6,530                   7,775
<INCOME-CONTINUING>                              5,862                  14,549                  17,616
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     5,862                  14,549                  17,616
<EPS-PRIMARY>                                     0.35                    0.88                    1.06
<EPS-DILUTED>                                     0.35                    0.87                    1.05


</TABLE>