{"product_id":"proto-j5421mh-21mm-6-point-1-2-in-drive-hand-socket","title":"Proto J5421MH 21mm 6-point 1\/2 in Drive Hand Socket","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PROTO J5421MH is a 21 mm, 6-point hand socket designed for use with a 1\/2 inch drive ratchet or breaker bar. Built from alloy steel with a chrome-plated finish, this socket delivers the corrosion resistance and surface hardness that professional mechanics and maintenance technicians expect in daily shop use. At 1.5 inches in overall length, it is a standard-length socket suited for fastener access in typical clearance situations. It meets ASME B107.5 standards, confirming dimensional and strength compliance for hand socket tools.\u003c\/p\u003e\n\u003cp\u003eThis socket is a standard choice for automotive, fleet maintenance, and industrial applications where 21 mm fasteners are common. The 6-point design concentrates drive force on the flats of the fastener rather than the corners, reducing the risk of rounding under high torque. It is appropriate for use in professional shop environments, field service trucks, and maintenance facilities. The 1\/2 inch drive size makes it compatible with a wide range of common ratchets, extensions, and torque wrenches in that drive family.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e21 mm socket size fits standard metric fasteners common in automotive and industrial work\u003c\/li\u003e\n  \u003cli\u003e6-point geometry drives on fastener flats, reducing corner rounding under load\u003c\/li\u003e\n  \u003cli\u003e1\/2 inch drive compatible with standard ratchets, extensions, and torque wrenches\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction with chrome-plated finish for corrosion resistance and durability\u003c\/li\u003e\n  \u003cli\u003eStandard length at 1.5 inches overall for general-clearance fastener access\u003c\/li\u003e\n  \u003cli\u003eMeets ASME B107.5 dimensional and performance standards for hand sockets\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 1\/2 inch drive, 21 mm hand socket for use with any 1\/2 inch drive ratchet, breaker bar, extension, or torque wrench conforming to standard drive dimensions.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall and remove by a qualified mechanic or maintenance technician using standard 1\/2 inch drive tooling. Confirm the socket is fully seated on the fastener before applying torque to avoid slippage. Do not use hand sockets with impact drivers unless the socket is rated for impact use. Inspect the socket for cracks or deformation before each use and remove from service if damaged.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSocket Size\u003c\/strong\u003e: 21 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 1\/2 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Points\u003c\/strong\u003e: 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Type\u003c\/strong\u003e: Standard\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Chrome-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\u003c\/strong\u003e: ASME B107.5\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTether Style\u003c\/strong\u003e: Not Tether Capable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.2 pounds\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: PROTO\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: J5421MH\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PROTO","offers":[{"title":"Default Title","offer_id":51539042271538,"sku":"J5421MH","price":21.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/0b020cc42f715f6007a0aac31c9b0fba.jpg?v=1785833577","url":"https:\/\/voomisupply.com\/products\/proto-j5421mh-21mm-6-point-1-2-in-drive-hand-socket","provider":"Voomi Supply","version":"1.0","type":"link"}