| 
                     Date
      of Report (Date of earliest event reported): 
                   | 
                  
                     May
      7, 2009 
                   | 
                
| 
                         Delaware 
                       | 
                      
                         1-6770 
                       | 
                      
                         25-0790410 
                       | 
                    ||
| 
                         (State
      or other 
                       | 
                      
                         (Commission
      File 
                       | 
                      
                         (IRS
      Employer 
                       | 
                    ||
| 
                         Jurisdiction 
                       | 
                      
                         Number) 
                       | 
                      
                         Identification
      No.) 
                       | 
                    ||
| 
                         of
      incorporation) 
                       | 
                      
| 
                     8285
      Tournament Drive 
                   | 
                  ||
| 
                     Suite
      150 
                   | 
                  ||
| 
                     Memphis,
      Tennessee 
                   | 
                  
                     38125 
                   | 
                |
| 
                     (Address
      of principal 
                   | 
                  
                     Zip
      Code 
                   | 
                |
| 
                     executive
      offices) 
                   | 
                  
| 
                   Registrant's
      telephone number, including area code: 
                 | 
                
                   (901)
      753-3200 
                 | 
              
| 
                   Registrant's
      Former Name or Address, if changed since last report: 
                 | 
                
                   N/A 
                 | 
              
| 
                 MUELLER
      INDUSTRIES, INC. 
               | 
              |||
| 
                 | 
              
                 By:
       
               | 
              /s/ Kent A. McKee | |
|       
                 Name:   Kent
      A. McKee 
               | 
              |||
|       
                 Title:  Executive
      Vice President and Chief Financial Officer 
               | 
              |||
| 
                 Exhibit
      No.  
               | 
              
                    Description 
               | 
            
| 99.1 | Press release, dated May 7, 2009. |