{"product_id":"value-collection-581427pr-hex-socket-cap-screw-5-16-18","title":"Value Collection 581427PR Hex Socket Cap Screw 5\/16-18","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 581427PR is a hex socket cap screw designed for applications requiring a recessed drive fastener with a clean, low-profile head. Threaded to 5\/16-18 UNC with a 1-5\/8 inch length under head, this screw is partially threaded and driven with a 1\/4 inch hex key. It is manufactured from alloy steel with a black oxide finish for corrosion resistance and surface hardness. This fastener meets ASME\/ANSI B18.3 and ASTM A574 standards, making it suitable for demanding mechanical and structural assemblies. It is commonly installed by machinists, millwrights, pipefitters, and general mechanical contractors.\u003c\/p\u003e\u003cp\u003eThis socket cap screw is used in a wide range of industrial, mechanical, and trade applications where a standard hex head would interfere with surrounding components or clearance is limited. The partially threaded shank provides a grip zone for precise clamping force in bolted joints. Typical install scenarios include machine frames, bracket mounting, fixture assembly, and equipment maintenance across light industrial and heavy commercial environments.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e5\/16-18 UNC thread size for compatibility with standard inch-series tapped holes\u003c\/li\u003e\n\u003cli\u003e1-5\/8 inch length under head with partial threading for reliable clamping\u003c\/li\u003e\n\u003cli\u003e1\/4 inch hex socket drive for use with standard hex keys or socket bits\u003c\/li\u003e\n\u003cli\u003eAlloy steel construction meets ASTM A574 mechanical property requirements\u003c\/li\u003e\n\u003cli\u003eBlack oxide finish provides mild corrosion resistance and reduces light reflection\u003c\/li\u003e\n\u003cli\u003eConforms to ASME\/ANSI B18.3 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or stock fastener for any 5\/16-18 UNC tapped hole application requiring a socket cap screw per ASME\/ANSI B18.3 dimensional standards.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation requires a 1\/4 inch hex key or socket drive bit. Always verify the mating tapped hole is clean, properly formed, and free of debris before installation. Do not exceed the rated torque for the thread size and material class. Follow applicable industry standards and equipment manufacturer guidelines when torquing fasteners in structural or pressure-bearing assemblies.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/16-18 UNC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1-5\/8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\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: 1\/4 inch\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 and ASTM A574\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.05 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: 581427PR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51711213207858,"sku":"581427PR","price":1792.17,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/edda97e00086a8a5f35939fb8bb6b6d2.jpg?v=1788474977","url":"https:\/\/voomisupply.com\/products\/value-collection-581427pr-hex-socket-cap-screw-5-16-18","provider":"Voomi Supply","version":"1.0","type":"link"}