<SEC-DOCUMENT>0000008947-21-000094.txt : 20210520
<SEC-HEADER>0000008947-21-000094.hdr.sgml : 20210520
<ACCEPTANCE-DATETIME>20210520181308
ACCESSION NUMBER:		0000008947-21-000094
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210518
FILED AS OF DATE:		20210520
DATE AS OF CHANGE:		20210520

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Mackey Tara D
		CENTRAL INDEX KEY:			0001607217

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12777
		FILM NUMBER:		21945893

	MAIL ADDRESS:	
		STREET 1:		ONE MUSEUM PLACE, SUITE 500
		STREET 2:		3100 WEST 7TH STREET
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76116

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AZZ INC
		CENTRAL INDEX KEY:			0000008947
		STANDARD INDUSTRIAL CLASSIFICATION:	ELECTRIC LIGHTING & WIRING EQUIPMENT [3640]
		IRS NUMBER:				750948250
		STATE OF INCORPORATION:			TX
		FISCAL YEAR END:			0228

	BUSINESS ADDRESS:	
		STREET 1:		ONE MUSEUM PLACE, SUITE 500
		STREET 2:		3100 W 7TH STREET
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76107
		BUSINESS PHONE:		8178100095

	MAIL ADDRESS:	
		STREET 1:		ONE MUSEUM PLACE, SUITE 500
		STREET 2:		3100 W 7TH STREET
		CITY:			FORT WORTH
		STATE:			TX
		ZIP:			76107

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AZTEC MANUFACTURING CO
		DATE OF NAME CHANGE:	20000911
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>wf-form4_162154876506624.xml
<DESCRIPTION>FORM 4
<TEXT>
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    <periodOfReport>2021-05-18</periodOfReport>

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    <issuer>
        <issuerCik>0000008947</issuerCik>
        <issuerName>AZZ INC</issuerName>
        <issuerTradingSymbol>AZZ</issuerTradingSymbol>
    </issuer>

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        <reportingOwnerId>
            <rptOwnerCik>0001607217</rptOwnerCik>
            <rptOwnerName>Mackey Tara D</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>ONE MUSEUM PLACE</rptOwnerStreet1>
            <rptOwnerStreet2>3100 WEST 7TH STREET</rptOwnerStreet2>
            <rptOwnerCity>FORT WORTH</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>76107</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>Chief Legal Officer</officerTitle>
            <otherText></otherText>
        </reportingOwnerRelationship>
    </reportingOwner>

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            </transactionDate>
            <transactionCoding>
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            <transactionAmounts>
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                <transactionPricePerShare>
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                <transactionCode>M</transactionCode>
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                    <value>4570</value>
                    <footnoteId id="F3"/>
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                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
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                </sharesOwnedFollowingTransaction>
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            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
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            </transactionDate>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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                    <footnoteId id="F4"/>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
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                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>COMMON STOCK</value>
            </securityTitle>
            <transactionDate>
                <value>2021-05-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>F</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
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                    <value>1166</value>
                    <footnoteId id="F5"/>
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                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
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                </transactionAcquiredDisposedCode>
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                    <value>14377</value>
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        </nonDerivativeTransaction>
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    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Restricted Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
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            <transactionDate>
                <value>2021-05-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
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                    <value>1191</value>
                </transactionShares>
                <transactionPricePerShare>
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                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F7"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F8"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1191.0</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance Share Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <footnoteId id="F9"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2021-05-18</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>4570</value>
                    <footnoteId id="F3"/>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F10"/>
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            <expirationDate>
                <footnoteId id="F8"/>
            </expirationDate>
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                <underlyingSecurityTitle>
                    <value>COMMON STOCK</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
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                    <footnoteId id="F3"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
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    <footnotes>
        <footnote id="F1">Represents the vesting of dividend equivalent rights that accrued on 1,191 restricted stock units (&quot;RSUs&quot;) granted on 5/18/2018, which AZZ has been settled in shares of AZZ common stock.</footnote>
        <footnote id="F2">The reporting person disposed of 303 shares of common stock to satisfy tax withholding obligations on the vesting of 1,245 RSUs and dividend equivalents.</footnote>
        <footnote id="F3">Represents the number of shares acquired by the reporting person upon the vesting of performance share units (&quot;PSUs&quot;) granted on 5/18/2018.  This number represents 3,571 target PSUs and 999 additional PSUs earned based upon the achievement of 128% of pre-established performance goals during the performance cycle.</footnote>
        <footnote id="F4">Represents the vesting of dividend equivalent rights that accrued on the target PSUs of 3,571 granted on 5/18/2018, which has been settled in shares of AZZ common stock.</footnote>
        <footnote id="F5">The reporting person disposed of 1,166 shares of common stock to satisfy tax withholding obligations on the vesting of 4,792 PSUs and dividend equivalents.</footnote>
        <footnote id="F6">Each RSU represents a contingent right to receive one share of AZZ common stock.</footnote>
        <footnote id="F7">The RSUs were granted under AZZ's 2014 Long Term Incentive Plan (the &quot;2014 Plan&quot;) and vest over a 3-year period with 1/3rd of the RSUs vesting on each of the first, second and third anniversaries of the grant date which was 5/18/2018.</footnote>
        <footnote id="F8">Once vested, the shares of common stock are not subject to expiration.</footnote>
        <footnote id="F9">The PSUs represent a contingent right to receive shares of AZZ common stock with the actual number varying based on achieved results.</footnote>
        <footnote id="F10">The PSUs were granted under the 2014 Plan and had a three-year performance cycle (3/1/2018 - 2/28/21) and vested upon the achievement of certain pre-established performance goals.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Tara D Mackey</signatureName>
        <signatureDate>2021-05-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
