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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">UNITED STATES</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SECURITIES AND EXCHANGE COMMISSION<BR>
Washington, D.C. 20549</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">FORM 8-K</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">CURRENT REPORT</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Pursuant to Section 13 or 15(d) of
the Securities Exchange Act of 1934</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Date of Report (Date of earliest event reported):&#9;<U>May
24, 2012</U></P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">MUELLER INDUSTRIES, INC.</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="font-weight: normal">(Exact
name of registrant as specified in its charter)</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 30%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold; border-bottom: Black 1pt solid">Delaware</TD>
    <TD STYLE="width: 5%">&nbsp;</TD>
    <TD STYLE="width: 30%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold; border-bottom: Black 1pt solid">1-6770</TD>
    <TD STYLE="width: 5%">&nbsp;</TD>
    <TD STYLE="width: 30%; padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold; border-bottom: Black 1pt solid">25-0790410</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">(State or other jurisdiction of incorporation)</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">(Commission File Number)</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">(IRS Employer Identification No.)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: left">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold; border-bottom: Black 1pt solid"><B>8285 Tournament Drive Suite 150<BR>
Memphis, Tennessee</B></TD>
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center; font-weight: bold; vertical-align: bottom; border-bottom: Black 1pt solid">38125</TD></TR>
<TR STYLE="vertical-align: top">
    <TD COLSPAN="3" STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">(Address of principal executive offices)</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 5.4pt; padding-left: 5.4pt; text-align: center">(Zip Code)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Registrant&rsquo;s telephone number, including
area code: &#9;<B> <U>(901) 753-3200</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Not Applicable</B></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">(Former name or former address, if changed
since last report)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in">Check the appropriate box below if the Form
8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt"><FONT STYLE="font-family: Wingdings">&#168;</FONT>
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt"><FONT STYLE="font-family: Wingdings">&#168;</FONT>
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt"><FONT STYLE="font-family: Wingdings">&#168;</FONT>
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt"><FONT STYLE="font-family: Wingdings">&#168;</FONT>
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 43pt; text-indent: -23pt"></P>

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<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: bold 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 1in; text-align: left">Item 2.04.</TD><TD>Triggering Events That Accelerate or Increase a Direct Financial
Obligation or an Obligation under an Off-Balance Sheet Arrangement.</TD>
</TR></TABLE>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">On May 24, 2012, Mueller Industries, Inc.
(the &ldquo;Company&rdquo;) announced that it had issued a Notice of Redemption of all of its issued and outstanding 6% Subordinated
Debentures due 2014 (the &ldquo;Debentures,&rdquo; and the transaction whereby the Debentures are redeemed, the &ldquo;Redemption&rdquo;).
The Debentures will be redeemed at par value totaling approximately $148.2 million principal and accrued interest totaling approximately
$1.3 million. The Redemption will occur on or about June 25, 2012. The Redemption will be conducted pursuant to Section 3.4 of
the Indenture dated October 26, 2004 between the Company, as issuer, and Regions Bank (as successor to SunTrust Bank), as trustee.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 20.15pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 1in; text-align: left"><B>Item 8.01</B></TD><TD><B>Other Events</B></TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">On May 24, 2012,
and in connection with the Redemption, the Company issued a press release, a copy of which is attached hereto as Exhibit 99.1 and
incorporated herein by reference.</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: bold 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0in"></TD><TD STYLE="width: 1in; text-align: left">Item 9.01.</TD><TD>Financial Statements and Exhibits.</TD>
</TR></TABLE>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<TD STYLE="width: 0in"></TD><TD STYLE="width: 0.5in; text-align: left"><FONT STYLE="font-weight: normal">(d)</FONT></TD><TD><FONT STYLE="font-weight: normal">Exhibits.</FONT></TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><B><U>Exhibits:</U></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.5in; text-align: left">99.1</TD><TD>Press Release, dated May 24, 2012.</TD>
</TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">SIGNATURES</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">Pursuant to the requirements of the Securities
Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned hereunto
duly authorized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif">
<TR>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD COLSPAN="2">MUELLER INDUSTRIES, INC.</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD COLSPAN="2">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; width: 47%">&nbsp;</TD>
    <TD STYLE="width: 7%">By:&nbsp;</TD>
    <TD STYLE="vertical-align: top; width: 46%">/s/ Gary C. Wilkerson</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">&nbsp;</TD>
    <TD>Name:<BR>Title:</TD>
    <TD STYLE="vertical-align: top; border-top: #000000 1px solid">Gary C. Wilkerson<BR>Vice President, General Counsel and Secretary</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: left; text-indent: 0pt; margin-top: 0pt; margin-bottom: 6pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; text-align: left; text-indent: 0pt; margin-top: 0pt; margin-bottom: 6pt">Date: May 24, 2012</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>Exhibit Index</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 22%; padding: 0pt; font-weight: bold; text-decoration: underline">Exhibit No.</TD>
    <TD STYLE="width: 78%; padding: 0pt">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B><U>Description</U>&nbsp;</B></P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0pt; font-weight: bold">&nbsp;</TD>
    <TD STYLE="padding: 0pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 0pt; text-align: justify">99.1&nbsp;</TD>
    <TD STYLE="padding: 0pt; text-align: justify">Press Release, dated May 24, 2012.</TD></TR>
</TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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{"company-data": {"conformed-name": "MUELLER INDUSTRIES INC", "cik": "0000089439", "assigned-sic": "3350", "irs-number": "250790410", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "001-06770", "film-number": "12866567"}, "business-address": {"street1": "SUITE 150", "street2": "8285 TOURNAMENT DRIVE", "city": "MEMPHIS", "state": "TN", "zip": "38125", "phone": "(901)753-3200"}, "mail-address": {"street1": "SUITE 150", "street2": "8285 TOURNAMENT DRIVE", "city": "MEMPHIS", "state": "TN", "zip": "38125"}, "former-company": {"former-conformed-name": "SHARON STEEL CORP", "date-changed": "19910103"}}
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of
the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported):
May
24, 2012
MUELLER INDUSTRIES, INC.
(Exact
name of registrant as specified in its charter)
Delaware
1-6770
25-0790410
(State or other jurisdiction of incorporation)
(Commission File Number)
(IRS Employer Identification No.)
8285 Tournament Drive Suite 150
Memphis, Tennessee
38125
(Address of principal executive offices)
(Zip Code)
Registrant's telephone number, including
area code:
(901) 753-3200
Not Applicable
(Former name or former address, if changed
since last report)
Check the appropriate box below if the Form
8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
¨
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
¨
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
¨
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 2.04.
Triggering Events That Accelerate or Increase a Direct Financial
Obligation or an Obligation under an Off-Balance Sheet Arrangement.
On May 24, 2012, Mueller Industries, Inc.
(the "Company") announced that it had issued a Notice of Redemption of all of its issued and outstanding 6% Subordinated
Debentures due 2014 (the "Debentures," and the transaction whereby the Debentures are redeemed, the "Redemption").
The Debentures will be redeemed at par value totaling approximately $148.2 million principal and accrued interest totaling approximately
$1.3 million. The Redemption will occur on or about June 25, 2012. The Redemption will be conducted pursuant to Section 3.4 of
the Indenture dated October 26, 2004 between the Company, as issuer, and Regions Bank (as successor to SunTrust Bank), as trustee.
Item 8.01
Other Events
On May 24, 2012,
and in connection with the Redemption, the Company issued a press release, a copy of which is attached hereto as Exhibit 99.1 and
incorporated herein by reference.
Item 9.01.
Financial Statements and Exhibits.
(d)
Exhibits.
Exhibits:
99.1
Press Release, dated May 24, 2012.
SIGNATURES
Pursuant to the requirements of the Securities
Exchange Act of 1934, as amended, the Registrant has duly caused this Report to be signed on its behalf by the undersigned hereunto
duly authorized.
MUELLER INDUSTRIES, INC.
By:
/s/ Gary C. Wilkerson
Name:
Title:
Gary C. Wilkerson
Vice President, General Counsel and Secretary
Date: May 24, 2012
Exhibit Index
Exhibit No.
Description
99.1
Press Release, dated May 24, 2012.