{"product_id":"value-collection-581917br-hex-socket-cap-screw-1-1-4-12-unf","title":"Value Collection 581917BR Hex Socket Cap Screw 1-1\/4-12 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe VALUE COLLECTION 581917BR is a partially threaded hex socket cap screw designed for high-load fastening applications in industrial, mechanical, and structural assemblies. Sized at 1-1\/4-12 UNF with a 4-inch length under head, this fastener is driven with a 7\/8-inch hex socket. The alloy steel construction provides high tensile strength, and the black oxide finish offers baseline corrosion resistance and reduced light reflection. This screw meets ASME\/ANSI B18.3 and ASTM A574 standards, making it suitable for applications where dimensional and mechanical property compliance is required.\u003c\/p\u003e\u003cp\u003eThis cap screw is used in heavy-duty mechanical assemblies, machine tool mounting, hydraulic component attachment, and structural fastening where fine-thread engagement and high clamping force are needed. The 1-1\/4-12 UNF thread pitch provides finer thread engagement than coarse-thread equivalents, making it well suited for applications with vibration or where precise torque retention matters. It is typically installed by machinists, maintenance technicians, and industrial assembly professionals.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e1-1\/4-12 UNF thread size for fine-thread engagement and superior clamping retention\u003c\/li\u003e\n\u003cli\u003e4-inch length under head accommodates deeper fastening in thick workpieces\u003c\/li\u003e\n\u003cli\u003ePartially threaded shank allows shear-load bearing through the unthreaded grip section\u003c\/li\u003e\n\u003cli\u003e7\/8-inch hex socket drive for use with standard socket tooling\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 a low-reflectance surface\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as a standard ASME\/ANSI B18.3-compliant hex socket cap screw for industrial and mechanical fastening applications requiring a 1-1\/4-12 UNF partially threaded fastener.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation is performed by machinists or maintenance technicians using a 7\/8-inch hex key or socket drive. Always ensure the mating threaded hole is clean, properly tapped to UNF specifications, and free of debris before driving. Do not exceed the rated torque capacity of the fastener based on the ASTM A574 grade requirements. Apply thread lubricant or anti-seize as appropriate for the application environment to prevent galling on assembly.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-1\/4-12 UNF\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 4 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: 7\/8 inches\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 A574\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.02 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: 581917BR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51699702366514,"sku":"581917BR","price":71.77,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e2816fc3ea1a0de3ebbded6c00312548_1f4e97db-632f-48de-a760-4583f5585246.jpg?v=1788379487","url":"https:\/\/voomisupply.com\/products\/value-collection-581917br-hex-socket-cap-screw-1-1-4-12-unf","provider":"Voomi Supply","version":"1.0","type":"link"}