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                    <ccc>XXXXXXXX</ccc>
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            <liveTestFlag>LIVE</liveTestFlag>



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            <issuerCik>0001003078</issuerCik>
            <issuerName>MSC INDUSTRIAL DIRECT CO., INC.</issuerName>
            <secFileNumber>001-14130</secFileNumber>
            <issuerAddress>
                <ns2:street1>515 Broadhollow Road</ns2:street1>
                <ns2:city>Melville</ns2:city>
                <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                <ns2:zipCode>11747</ns2:zipCode>
            </issuerAddress>
            <issuerContactPhone>5168122000</issuerContactPhone>
            <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>KIMBERLY A SHACKLETT</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
            <relationshipsToIssuer>
                <relationshipToIssuer>Officer</relationshipToIssuer>
            </relationshipsToIssuer>
        </issuerInfo>
        <securitiesInformation>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <brokerOrMarketmakerDetails>
                <name>Morgan Stanley Smith Barney LLC Executive Financial Services</name>
                <address>
                    <ns2:street1>1 New York Plaza</ns2:street1>
                    <ns2:street2>8th Floor</ns2:street2>
                    <ns2:city>New York</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>10004</ns2:zipCode>
                </address>
            </brokerOrMarketmakerDetails>
            <noOfUnitsSold>2130</noOfUnitsSold>
            <aggregateMarketValue>193191.00</aggregateMarketValue>
            <noOfUnitsOutstanding>55675778</noOfUnitsOutstanding>
            <approxSaleDate>07/10/2025</approxSaleDate>
            <securitiesExchangeName>NYSE</securitiesExchangeName>
        </securitiesInformation>
        <securitiesToBeSold>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <acquiredDate>07/10/2025</acquiredDate>
            <natureOfAcquisitionTransaction>Exercise of Stock Options</natureOfAcquisitionTransaction>
            <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
            <isGiftTransaction>N</isGiftTransaction>
            <amountOfSecuritiesAcquired>2130</amountOfSecuritiesAcquired>
            <paymentDate>07/10/2025</paymentDate>
            <natureOfPayment>Cash</natureOfPayment>
        </securitiesToBeSold>
        <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
        <securitiesSoldInPast3Months>
            <sellerDetails>
                <name>10b5-1 Sales for KIMBERLY A SHACKLETT</name>
                <address>
                    <ns2:street1>515 Broadhollow Road</ns2:street1>
                    <ns2:city>Melville</ns2:city>
                    <ns2:stateOrCountry>NY</ns2:stateOrCountry>
                    <ns2:zipCode>11747</ns2:zipCode>
                </address>
            </sellerDetails>
            <securitiesClassTitle>Common</securitiesClassTitle>
            <saleDate>07/09/2025</saleDate>
            <amountOfSecuritiesSold>2129</amountOfSecuritiesSold>
            <grossProceeds>192887.40</grossProceeds>
        </securitiesSoldInPast3Months>
        <noticeSignature>
            <noticeDate>07/10/2025</noticeDate>
            <planAdoptionDates>
                <planAdoptionDate>04/09/2025</planAdoptionDate>
            </planAdoptionDates>
            <signature>/s/ Kimberly Ann Shacklett</signature>
        </noticeSignature>
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144
0001923635
XXXXXXXX
LIVE
0001003078
MSC INDUSTRIAL DIRECT CO., INC.
001-14130
515 Broadhollow Road
Melville
NY
11747
5168122000
KIMBERLY A SHACKLETT
Officer
Common
Morgan Stanley Smith Barney LLC Executive Financial Services
1 New York Plaza
8th Floor
New York
NY
10004
2130
193191.00
55675778
07/10/2025
NYSE
Common
07/10/2025
Exercise of Stock Options
Issuer
N
2130
07/10/2025
Cash
N
10b5-1 Sales for KIMBERLY A SHACKLETT
515 Broadhollow Road
Melville
NY
11747
Common
07/09/2025
2129
192887.40
07/10/2025
04/09/2025
/s/ Kimberly Ann Shacklett