<ARTICLE> 5
<LEGEND>
THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S FORM 10-K FOR THE FISCAL YEAR ENDED DECEMBER 25, 1999 AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS
</LEGEND>
<CIK> 0000089439
<NAME> MUELLER INDUSTRIES, INC.
<MULTIPLIER> 1,000

                             
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-25-1999
<PERIOD-END>                               DEC-25-1999
<CASH>                                         149,454
<SECURITIES>                                         0
<RECEIVABLES>                                  173,225
<ALLOWANCES>                                     5,367
<INVENTORY>                                    119,644
<CURRENT-ASSETS>                               440,746
<PP&E>                                         478,660
<DEPRECIATION>                                 130,814
<TOTAL-ASSETS>                                 904,080
<CURRENT-LIABILITIES>                          153,061
<BONDS>                                        118,858
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           401
<OTHER-SE>                                     569,029
<TOTAL-LIABILITY-AND-EQUITY>                   904,080
<SALES>                                      1,168,744
<TOTAL-REVENUES>                             1,168,744
<CGS>                                          886,531
<TOTAL-COSTS>                                  886,531
<OTHER-EXPENSES>                               134,287
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                              11,681
<INCOME-PRETAX>                                145,709
<INCOME-TAX>                                    46,430
<INCOME-CONTINUING>                             99,279
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    99,279
<EPS-BASIC>                                     2.79
<EPS-DILUTED>                                     2.51