{"product_id":"value-collection-721009pr-flat-socket-cap-screw-1-2-20","title":"Value Collection 721009PR Flat Socket Cap Screw 1\/2-20","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 721009PR is a flat socket cap screw designed for flush or countersunk fastening applications in metal assemblies and structural components. It features an 82-degree flat head with a 5\/16-inch hex socket drive, allowing installation with a standard hex key or Allen driver. The screw is partially threaded along a 4-inch overall length with a 1\/2-20 UNF thread size, providing fine-thread engagement suitable for applications requiring precise clamping force. Manufactured from alloy steel with a black oxide finish, it offers increased hardness and moderate corrosion resistance. Machinists, millwrights, and mechanical contractors typically install this fastener in fabricated steel structures, machinery frames, and equipment enclosures.\u003c\/p\u003e\n\u003cp\u003eThis flat socket cap screw is suited for industrial, commercial, and OEM manufacturing applications where a low-profile, flush-mount fastener is required. The 82-degree countersunk head conforms to ASME\/ANSI B18.3 and ASTM F835 standards, making it appropriate for controlled-fit assemblies in mechanical systems. Partial threading provides an unthreaded shank section that can serve as a shoulder or alignment feature within bored holes. The fine UNF thread pitch makes it well-suited for thin-walled materials or applications where vibration resistance and precise torque control are priorities.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e82-degree flat countersunk head for flush installation in chamfered or countersunk holes\u003c\/li\u003e\n  \u003cli\u003e5\/16-inch hex socket drive compatible with standard Allen keys and hex drivers\u003c\/li\u003e\n  \u003cli\u003e1\/2-20 UNF fine-thread specification for precise torque control and vibration resistance\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank allows use as a shoulder or alignment feature\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction with black oxide finish for hardness and moderate corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM F835 fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard-dimension replacement or OEM-style flat socket cap screw for machinery, fabricated steel assemblies, and mechanical equipment requiring a 1\/2-20 UNF countersunk fastener conforming to ASME\/ANSI B18.3 and ASTM F835.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by machinists, millwrights, or maintenance technicians using a calibrated torque wrench and the appropriate 5\/16-inch hex key or driver bit. Ensure the mating countersink angle matches 82 degrees before installation to achieve full head seating. De-energize and lock out any equipment before servicing fasteners in live mechanical assemblies, following applicable OSHA lockout\/tagout procedures. Do not exceed the rated mechanical load for the fastener grade or substitute with non-alloy hardware in load-bearing applications.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-20\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 4 inches (overall)\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: 5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\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\u003eSystem of Measurement\u003c\/strong\u003e: Inch\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\u003eWeight\u003c\/strong\u003e: 0.02 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: 721009PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51699643318578,"sku":"721009PR","price":1273.31,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d4e14fa2f3ded20955a633a001935bb0_349425f2-450a-49cc-bb1e-e52cb07ceb6b.jpg?v=1788378613","url":"https:\/\/voomisupply.com\/products\/value-collection-721009pr-flat-socket-cap-screw-1-2-20","provider":"Voomi Supply","version":"1.0","type":"link"}