{"product_id":"gearwrench-84579n-impact-socket-1-2-in-drive-21mm","title":"Gearwrench 84579N Impact Socket 1\/2 in Drive 21mm","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GEARWRENCH 84579N is a 6-point hex drive impact socket designed for heavy-duty fastener work in professional and industrial applications. Built from chromium-molybdenum steel with a black oxide finish, it is engineered to absorb and transfer the high-torque output of pneumatic and electric impact drivers without fracturing or deforming. The 1\/2 inch drive accepts standard 1\/2 inch impact wrenches, and the 21mm socket size covers a wide range of metric fasteners common in automotive, fleet, and mechanical maintenance work. High-visibility laser-etched markings allow fast size identification in low-light or high-volume shop conditions.\u003c\/p\u003e\n\u003cp\u003eThis socket is suited for automotive repair, fleet maintenance, equipment service, and general mechanical work where metric fasteners are standard. The off-corner loading design reduces contact stress on fastener flats, minimizing the risk of rounding during removal of stubborn or corroded hardware. Secondary hard-stamped size markings provide a permanent backup to the laser etching, supporting long-term durability in demanding shop environments. Licensed mechanics, fleet technicians, and experienced DIYers working with impact tools will find this a direct-fit addition to a standard 1\/2 inch drive impact set.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eChromium-molybdenum steel construction rated for impact tool use\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish resists corrosion and reduces glare\u003c\/li\u003e\n  \u003cli\u003e6-point hex drive geometry maximizes contact with fastener flats\u003c\/li\u003e\n  \u003cli\u003eOff-corner loading design reduces fastener rounding during high-torque removal\u003c\/li\u003e\n  \u003cli\u003eHigh-visibility laser-etched markings for fast size identification\u003c\/li\u003e\n  \u003cli\u003eSecondary hard-stamped size markings for permanent, wear-resistant labeling\u003c\/li\u003e\n  \u003cli\u003eMeets ASME B107.33M standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 1\/2 inch drive impact wrenches and ratchets. Fits 21mm metric fasteners. Compatible with pneumatic, cordless, and corded electric 1\/2 inch impact drivers.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and remove using standard 1\/2 inch drive impact tools. Ensure the socket is fully seated on the drive anvil and the fastener before applying torque. Do not use impact sockets on non-impact hand ratchets in applications that exceed the tool rating. Inspect the socket for cracks or deformation before each use and remove from service if damage is found.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSocket Size\u003c\/strong\u003e: 21mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Points\u003c\/strong\u003e: 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Style\u003c\/strong\u003e: Hex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Chromium-Molybdenum Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Black Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 3.23 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 1.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.75 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ASME B107.33M\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty\u003c\/strong\u003e: Lifetime\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement System\u003c\/strong\u003e: Metric\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GEARWRENCH\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 84579N\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GEARWRENCH","offers":[{"title":"Default Title","offer_id":51542252552498,"sku":"84579N","price":23.8,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/3537cbfaea834d507fd9386b202959f2.jpg?v=1785896435","url":"https:\/\/voomisupply.com\/products\/gearwrench-84579n-impact-socket-1-2-in-drive-21mm","provider":"Voomi Supply","version":"1.0","type":"link"}