<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
CONSOLIDATED BALANCE SHEET STATEMENT OF OPERATIONS AND NOTES TO THE CONSOLIDATED
FINANCIAL STATEMENTS AND AND IS QUALIFIED INS ENTIRETY BY REFERENCE TO SUCH
FINANCIAL STATEMENTS AND FOOTNOTES.
</LEGEND>
<RESTATED> 
<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   3-MOS
<FISCAL-YEAR-END>                          DEC-31-1998             DEC-31-1997
<PERIOD-START>                             JAN-31-1998             JAN-31-1997
<PERIOD-END>                               MAR-31-1998             MAR-31-1997
<CASH>                                          14,294                       0
<SECURITIES>                                       307                       0
<RECEIVABLES>                                  162,232                       0
<ALLOWANCES>                                    (8,051)                      0
<INVENTORY>                                     85,090                       0
<CURRENT-ASSETS>                               280,570                       0
<PP&E>                                         260,589                       0
<DEPRECIATION>                                (140,069)                      0
<TOTAL-ASSETS>                                 502,752                       0
<CURRENT-LIABILITIES>                          223,442                       0
<BONDS>                                          8,871                       0
<PREFERRED-MANDATORY>                              216                       0
<PREFERRED>                                          0                       0
<COMMON>                                             0                       0
<OTHER-SE>                                     270,816                       0
<TOTAL-LIABILITY-AND-EQUITY>                   502,752                       0
<SALES>                                         71,471                  77,448
<TOTAL-REVENUES>                               142,382                 142,353
<CGS>                                           47,415                  52,263
<TOTAL-COSTS>                                   99,899                  99,166
<OTHER-EXPENSES>                                 5,468                   6,755
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                               1,727                   1,753
<INCOME-PRETAX>                                 15,720                  15,667
<INCOME-TAX>                                     5,659                   5,659
<INCOME-CONTINUING>                             10,061                  10,027
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                    10,061                  10,027
<EPS-PRIMARY>                                     0.47                    0.48
<EPS-DILUTED>                                     0.46                    0.46
        

</TABLE>