{"product_id":"value-collection-721172pr-flat-socket-cap-screw-5-16-18","title":"Value Collection 721172PR Flat Socket Cap Screw 5\/16-18","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 721172PR is a flat socket cap screw designed for flush or countersunk fastening applications in mechanical assemblies. It features an 82-degree flat head with a 3\/16-inch hex socket drive, allowing installation with a standard hex key. The fastener is partially threaded with a 5\/16-18 UNC thread form and measures 2.75 inches in overall length. Manufactured from alloy steel with a black oxide finish, it offers solid mechanical strength and moderate corrosion resistance in dry or lightly oiled environments. Installation and maintenance technicians working on machinery, fixtures, and structural assemblies rely on this screw where a flush seating surface is required.\u003c\/p\u003e\n\u003cp\u003eThis screw is suited for use in industrial equipment, machine frames, tooling fixtures, and mechanical assemblies that require a countersunk fastening point. The 5\/16-18 UNC thread standard makes it compatible with tapped holes conforming to ASME\/ANSI B18.3 and ASTM F835 specifications. The black oxide finish is commonly selected for interior or enclosed applications where a low-reflectance, non-galling surface is preferred. Machinists, maintenance mechanics, and assembly technicians are the typical installers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e82-degree flat head seats flush in standard countersunk holes\u003c\/li\u003e\n  \u003cli\u003e3\/16-inch hex socket drive for precise torque application with a hex key\u003c\/li\u003e\n  \u003cli\u003e5\/16-18 UNC partially threaded shank for clamping force over longer grip lengths\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 light reflection and provides mild corrosion resistance\u003c\/li\u003e\n  \u003cli\u003eOverall length measured end-to-end at 2.75 inches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or service fastener for mechanical assemblies requiring a 5\/16-18 UNC flat socket cap screw conforming to ASME\/ANSI B18.3 and ASTM F835 standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by qualified mechanics or assembly technicians using a properly sized 3\/16-inch hex key or hex bit driver. Ensure the receiving tapped hole is clean and free of debris before driving the screw. Do not exceed the torque capacity of the alloy steel fastener, and avoid using impact drivers that may damage the hex socket or over-stress the threads. Partially threaded screws require adequate thread engagement in the tapped hole to achieve rated clamping force.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOverall Length\u003c\/strong\u003e: 2.75 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: 3\/16 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: 0.01 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: 721172PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51718497960242,"sku":"721172PR","price":7767.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d4e14fa2f3ded20955a633a001935bb0_919b9f28-59cb-47b0-84b6-08ebe8d6fe70.jpg?v=1788553840","url":"https:\/\/voomisupply.com\/products\/value-collection-721172pr-flat-socket-cap-screw-5-16-18","provider":"Voomi Supply","version":"1.0","type":"link"}