{"product_id":"value-collection-211221pr-flat-socket-cap-screw-3-8-16","title":"Value Collection 211221PR Flat Socket Cap Screw 3\/8-16","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 211221PR is a flat socket cap screw designed for applications requiring a flush or countersunk fastener profile. It features an 82-degree flat head with a 7\/32-inch hex socket drive and a 3\/8-16 UNC thread on a 2-1\/4-inch overall length. The shank is partially threaded, making it well suited for clamping applications where an unthreaded grip area is needed. Manufactured from alloy steel with a black oxide finish, this screw delivers solid mechanical strength and moderate corrosion resistance in typical indoor or protected environments. Machinists, millwrights, and general maintenance mechanics commonly install this fastener type.\u003c\/p\u003e\n\u003cp\u003eThis flat socket cap screw is used in machine assemblies, fixtures, tooling plates, and structural fabrications where the screw head must sit flush with or below the mating surface. The hex socket drive allows installation with a standard hex key or Allen driver in tight clearance areas where a wrench cannot reach. The 3\/8-16 UNC thread is a widely used coarse-thread standard compatible with standard tapped holes, threaded inserts, and hex nuts in inch-based assemblies. Typical installation environments include manufacturing equipment, industrial machinery, and mechanical fixtures.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e82-degree flat head profile seats flush in standard countersunk holes\u003c\/li\u003e\n  \u003cli\u003e7\/32-inch hex socket drive for use with standard Allen keys or hex bit drivers\u003c\/li\u003e\n  \u003cli\u003e3\/8-16 UNC coarse thread standard for broad compatibility with inch-system tapped holes\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank provides an unthreaded grip zone for clamping applications\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASME\/ANSI B18.3 and ASTM F835 fastener standards\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish reduces surface reflectivity and provides light corrosion resistance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard inch-series flat socket cap screw for use in any application requiring a 3\/8-16 UNC countersunk fastener per ASME\/ANSI B18.3 and ASTM F835 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed with a 7\/32-inch hex key or Allen driver. Ensure the mating hole is countersunk to an 82-degree included angle to achieve full head seating. Power down or de-energize any equipment before fastener removal or installation on live machinery. Black oxide finish is not a heavy-duty corrosion barrier; apply supplemental lubricant or coating if the fastener will be exposed to moisture or corrosive environments.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 3\/8-16 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHead Type\u003c\/strong\u003e: 82 degree Flat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex Socket\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 7\/32 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\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: Black Oxide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFastener Standard\u003c\/strong\u003e: ASME\/ANSI B18.3, ASTM F835\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.07 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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 211221PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":67655582449970,"sku":"211221PR","price":7627.05,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d4e14fa2f3ded20955a633a001935bb0_3eaf7425-4157-4bc0-b6a9-45c2389df7bf.jpg?v=1790465244","url":"https:\/\/voomisupply.com\/products\/value-collection-211221pr-flat-socket-cap-screw-3-8-16","provider":"Voomi Supply","version":"1.0","type":"link"}