<ARTICLE> 5
<LEGEND>
THE SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S FORM 10-Q FOR THE FISCAL QUARTER ENDED JUNE 26, 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>                   6-MOS
<FISCAL-YEAR-END>                          DEC-25-1999
<PERIOD-END>                               JUN-26-1999
<CASH>                                         131,716
<SECURITIES>                                         0
<RECEIVABLES>                                  177,911
<ALLOWANCES>                                     5,009
<INVENTORY>                                    117,213
<CURRENT-ASSETS>                               433,024
<PP&E>                                         512,984
<DEPRECIATION>                                 134,840
<TOTAL-ASSETS>                                 917,338
<CURRENT-LIABILITIES>                          165,110
<BONDS>                                        146,374
<PREFERRED-MANDATORY>                                0
<PREFERRED>                                          0
<COMMON>                                           401
<OTHER-SE>                                     544,520
<TOTAL-LIABILITY-AND-EQUITY>                   917,338
<SALES>                                        581,182
<TOTAL-REVENUES>                               581,182
<CGS>                                          442,080
<TOTAL-COSTS>                                  442,080
<OTHER-EXPENSES>                                69,405
<LOSS-PROVISION>                                     0
<INTEREST-EXPENSE>                               6,008
<INCOME-PRETAX>                                 68,639
<INCOME-TAX>                                    21,511
<INCOME-CONTINUING>                             47,128
<DISCONTINUED>                                       0
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    47,128
<EPS-BASIC>                                     1.32
<EPS-DILUTED>                                     1.19