{"product_id":"value-collection-721285br-flat-socket-cap-screw-5-8-18-x-4-in","title":"Value Collection 721285BR Flat Socket Cap Screw 5\/8-18 X 4 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 721285BR is a flat socket cap screw designed for applications requiring a low-profile, flush-mount fastening solution. Manufactured from alloy steel with a black oxide finish, this screw offers solid mechanical strength and modest corrosion resistance in general industrial and mechanical assembly environments. It uses a 3\/8-inch hex socket drive and features an 82-degree flat head that seats flush into countersunk holes. The partially threaded shank allows for controlled clamping force. Installed by machinists, millwrights, and maintenance technicians, this fastener is sized at 5\/8-18 UNF thread with an overall length of 4 inches.\u003c\/p\u003e\u003cp\u003eThis fastener is suited for use in precision assemblies, machine components, fixtures, and structural connections where a flush head profile is required. The 5\/8-18 UNF thread form makes it appropriate for fine-thread applications where vibration resistance or fine adjustment of clamp load is a priority. The black oxide finish blends into ferrous metal assemblies and provides light surface protection against oxidation in dry or mildly humid environments. It meets ASME\/ANSI B18.3 and ASTM F835 standards, making it a recognized choice for controlled manufacturing and MRO applications.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e82-degree flat head with hex socket drive for flush countersunk installation\u003c\/li\u003e\n\u003cli\u003e3\/8-inch hex socket drive size for standard Allen key or hex bit tools\u003c\/li\u003e\n\u003cli\u003e5\/8-18 UNF fine thread for improved vibration resistance and clamping precision\u003c\/li\u003e\n\u003cli\u003ePartially threaded shank for proper grip-length clamping\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction with black oxide finish for surface protection\u003c\/li\u003e\n\u003cli\u003eMeets ASME\/ANSI B18.3 and ASTM F835 fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard UNF flat socket cap screw for use in any application requiring a 5\/8-18 threaded, flush-mount fastener conforming to ASME\/ANSI B18.3 specifications.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a 3\/8-inch hex key or matching hex bit driver. Ensure the mating countersink is machined to 82 degrees to achieve full head seating. Power down or de-energize any equipment before fastener replacement in live assemblies. Follow applicable torque guidelines from ASME or the equipment OEM for alloy steel UNF fasteners of this diameter.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/8-18\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: 3\/8 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\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: 0.0074 pounds\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\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: 721285BR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51723845009714,"sku":"721285BR","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d4e14fa2f3ded20955a633a001935bb0_a04efb33-3bfb-4d67-9b72-50990ad54cfd.jpg?v=1788608620","url":"https:\/\/voomisupply.com\/products\/value-collection-721285br-flat-socket-cap-screw-5-8-18-x-4-in","provider":"Voomi Supply","version":"1.0","type":"link"}