{"product_id":"proto-j52121s-socket-set-3-8-drive-21-pc-sae-6-point","title":"Proto J52121S Socket Set 3\/8 Drive 21 Pc Sae 6 Point","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe PROTO J52121S is a 21-piece SAE socket set with a 3\/8-inch drive, covering a range from 1\/4 inch to 3\/4 inch in 6-point configuration. The 6-point geometry delivers full contact on fastener flats, reducing the risk of rounding under high torque. This set is built for professional use in HVAC, plumbing, electrical, and general mechanical service work. Licensed tradespeople and experienced technicians rely on this type of socket set for equipment installation, service panel work, and mechanical assembly where a broad SAE range is needed in a single kit.\u003c\/p\u003e\n\u003cp\u003eThe J52121S is suited for residential and light commercial service applications where SAE fasteners are standard. The 3\/8-inch drive is the workhorse size for most trade service calls — large enough to handle moderate fastener torque and small enough to fit in confined equipment compartments. The 21-piece range ensures coverage across common SAE fastener sizes encountered on mechanical equipment, structural hardware, and utility connections.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e21-piece SAE socket set covering 1\/4 inch to 3\/4 inch\u003c\/li\u003e\n  \u003cli\u003e3\/8-inch drive for compatibility with standard ratchets and drive tools\u003c\/li\u003e\n  \u003cli\u003e6-point socket design for maximum contact on fastener flats\u003c\/li\u003e\n  \u003cli\u003eCompact package dimensions of 10 inches length by 8 inches width by 1.7 inches height\u003c\/li\u003e\n  \u003cli\u003eSet weight of 4.5 pounds for portability in the field\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with standard 3\/8-inch drive ratchets, extensions, and accessories. Sockets are SAE measurement type, suitable for equipment and fasteners using inch-based sizing.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and service use of this socket set is appropriate for licensed HVAC technicians, plumbers, electricians, and mechanical contractors. Always ensure the correct socket size is fully seated on the fastener before applying torque to avoid rounding. When servicing energized equipment, de-energize and lock out power before using hand tools on electrical enclosures or mechanical assemblies per applicable NEC or OSHA lockout\/tagout requirements. Inspect sockets for wear or cracking before each use and replace damaged sockets promptly.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 3\/8 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMeasurement Type\u003c\/strong\u003e: SAE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Pieces\u003c\/strong\u003e: 21\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Socket Size\u003c\/strong\u003e: 1\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Socket Size\u003c\/strong\u003e: 3\/4 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNumber of Points\u003c\/strong\u003e: 6\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Length\u003c\/strong\u003e: 10 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Width\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Height\u003c\/strong\u003e: 1.7 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 4.5 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 27111703\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: J52121S\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PROTO","offers":[{"title":"Default Title","offer_id":51542008430898,"sku":"J52121S","price":321.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/7543e19a4f5f40b5ddd4dc8ae68d7adc.jpg?v=1785889419","url":"https:\/\/voomisupply.com\/products\/proto-j52121s-socket-set-3-8-drive-21-pc-sae-6-point","provider":"Voomi Supply","version":"1.0","type":"link"}