<TABLE> <S> <C>

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

<S>                             <C>                     <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   6-MOS                   9-MOS
<FISCAL-YEAR-END>                          MAR-31-1997             JUN-30-1997             SEP-30-1997
<PERIOD-START>                             JAN-01-1997             APR-01-1997             JUL-01-1997
<PERIOD-END>                               MAR-31-1997             JUN-30-1997             SEP-30-1997
<CASH>                                          15,259                  12,701                  14,128
<SECURITIES>                                         0                       0                       0
<RECEIVABLES>                                   35,846                  34,983                  30,412
<ALLOWANCES>                                     1,450                   1,450                   1,400
<INVENTORY>                                     36,069                  36,589                  46,296
<CURRENT-ASSETS>                                89,530                  89,141                  93,272
<PP&E>                                          44,758                  51,575                  53,251
<DEPRECIATION>                                  18,096                  19,445                  19,703
<TOTAL-ASSETS>                                 128,642                 136,350                 141,664
<CURRENT-LIABILITIES>                           35,455                  37,111                  39,879
<BONDS>                                         40,000                  43,960                  43,920
<PREFERRED-MANDATORY>                                0                       0                       0
<PREFERRED>                                          0                       0                       0
<COMMON>                                         8,785                   8,785                   8,785
<OTHER-SE>                                      39,095                  41,187                  43,773
<TOTAL-LIABILITY-AND-EQUITY>                   128,642                 136,350                 141,664
<SALES>                                         61,319                 129,308                 198,174
<TOTAL-REVENUES>                                61,319                 129,308                 198,174
<CGS>                                           23,809                  50,528                  77,070
<TOTAL-COSTS>                                   55,005                 116,770                 178,654
<OTHER-EXPENSES>                                     0                       0                       0
<LOSS-PROVISION>                                    16                      32                      48
<INTEREST-EXPENSE>                                 822                   1,724                   2,581
<INCOME-PRETAX>                                  5,492                  10,814                  16,939
<INCOME-TAX>                                     2,197                   4,326                   6,776
<INCOME-CONTINUING>                              3,295                   6,488                  10,163
<DISCONTINUED>                                       0                       0                       0
<EXTRAORDINARY>                                      0                       0                       0
<CHANGES>                                            0                       0                       0
<NET-INCOME>                                     3,295                   6,488                  10,163
<EPS-PRIMARY>                                      .44                     .86                    1.34
<EPS-DILUTED>                                      .41                     .80                    1.24


</TABLE>