<SEC-DOCUMENT>0001127602-21-001765.txt : 20210115
<SEC-HEADER>0001127602-21-001765.hdr.sgml : 20210115
<ACCEPTANCE-DATETIME>20210115161724
ACCESSION NUMBER:		0001127602-21-001765
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20210114
FILED AS OF DATE:		20210115
DATE AS OF CHANGE:		20210115

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			McClain Gretchen W
		CENTRAL INDEX KEY:			0001394828

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-12981
		FILM NUMBER:		21532313

	MAIL ADDRESS:	
		STREET 1:		XYLEM INC.
		STREET 2:		1133 WESTCHESTER AVENUE, SUITE N200
		CITY:			WHITE PLAINS
		STATE:			NY
		ZIP:			10604

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AMETEK INC/
		CENTRAL INDEX KEY:			0001037868
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL INSTRUMENTS FOR MEASUREMENT, DISPLAY, AND CONTROL [3823]
		IRS NUMBER:				141682544
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1100 CASSATT ROAD
		CITY:			BERWYN
		STATE:			PA
		ZIP:			19312
		BUSINESS PHONE:		610-647-2121

	MAIL ADDRESS:	
		STREET 1:		1100 CASSATT ROAD
		CITY:			BERWYN
		STATE:			PA
		ZIP:			19312

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AMETEK AEROSPACE PRODUCTS INC
		DATE OF NAME CHANGE:	19970415
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>form4.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2021-01-14</periodOfReport>

    <issuer>
        <issuerCik>0001037868</issuerCik>
        <issuerName>AMETEK INC/</issuerName>
        <issuerTradingSymbol>AME</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001394828</rptOwnerCik>
            <rptOwnerName>McClain Gretchen W</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>172 WHITE PINE CANYON ROAD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>PARK CITY</rptOwnerCity>
            <rptOwnerState>UT</rptOwnerState>
            <rptOwnerZipCode>84060</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock/ Deferred Compensation</value>
            </securityTitle>
            <transactionDate>
                <value>2021-01-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>J</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>9</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>120.72</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1576</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock/ Deferred Compensation</value>
            </securityTitle>
            <transactionDate>
                <value>2021-01-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>I</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>56</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>120.72</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1520</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2021-01-14</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>I</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F2"/>
            </transactionCoding>
            <transactionTimeliness></transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>56</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>120.72</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>12087</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">Pursuant to the Deferred Compensation Plan (&quot;DC Plan&quot;), reflects the reporting person's deemed investment in the AMETEK Common Stock Fund (the &quot;Fund&quot;), an investment option within the AMETEK Retirement and Savings Plan.  The Fund consists of AMETEK common stock (approximately 98% of the Fund's value) and cash or cash equivalents (approximately 2% of the Fund's value).  The number of shares attributed to the reporting person as a DC Plan participant and expressed as equivalent shares has been calculated based on the closing price of AMETEK common stock in relation to the Net Asset Value of the Fund on the date of the reported transaction and may change from time to time without the volition of the reporting person depending on the fair market value of AMETEK common stock and the amount of cash in the Fund. The balance reflects a 9 share dividend and a 2 share increase due to the FMV of the AMETEK common stock and the amount of cash in the Fund.</footnote>
        <footnote id="F2">Represents shares of AMETEK, Inc. Common Stock issued upon the distribution of stock units from Ms. McClain's account under the AMETEK, Inc. Director's Deferred Compensation Plan.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/ Lynn Carino, attorney-in-fact for Ms. McClain</signatureName>
        <signatureDate>2021-01-15</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
