{"product_id":"value-collection-581887br-hex-socket-cap-screw-1-1-8-12-unf","title":"Value Collection 581887BR Hex Socket Cap Screw 1-1\/8-12 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581887BR is a hex socket cap screw designed for high-strength fastening applications in mechanical assembly, maintenance, and industrial fabrication. It features a 1-1\/8-12 UNF thread size with a 3.5-inch length under head and is fully threaded along its entire shank. Driven by a 7\/8-inch hex socket, the fastener is manufactured from alloy steel and finished with a black oxide coating that provides moderate corrosion resistance and reduces light reflection. This screw meets ASME\/ANSI B18.3 and ASTM A574 standards, making it appropriate for precision and load-bearing installations where dimensional accuracy and material strength are required.\u003c\/p\u003e\n\u003cp\u003eThis fastener is suited for industrial equipment assembly, machine component mounting, tooling fixtures, and structural mechanical connections where a UNF fine-thread profile is specified. The fine-thread 1-1\/8-12 UNF pitch offers stronger thread engagement and better resistance to vibration-induced loosening compared to coarse-thread equivalents. It is commonly installed by machinists, millwrights, maintenance technicians, and mechanical contractors working on production machinery, heavy equipment, or fabricated steel assemblies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1-1\/8-12 UNF fine-thread for precise torque control and vibration resistance\u003c\/li\u003e\n  \u003cli\u003e3.5-inch length under head with full threading along the entire shank\u003c\/li\u003e\n  \u003cli\u003e7\/8-inch hex socket drive for high-torque installation with standard tooling\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASTM A574 for tensile and yield strength requirements\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish provides mild corrosion resistance and a low-reflectance surface\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME\/ANSI B18.3 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement or direct-fit fastener for mechanical assemblies specifying a 1-1\/8-12 UNF hex socket cap screw per ASME\/ANSI B18.3 and ASTM A574.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by machinists or mechanical technicians using a 7\/8-inch hex key or socket driver. De-energize and lock out all equipment before fastener installation or removal per applicable OSHA lockout\/tagout procedures. Verify that mating thread taps and bores are clean and free of debris before driving the fastener. Do not substitute a coarse-thread driver or impact tool setting that exceeds the rated torque for the thread class and material.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1-1\/8-12 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Fully 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\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: 581887BR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51707037745458,"sku":"581887BR","price":58.07,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/f5b9e4eae1b3193bd8bcfc6f1b6b4132.jpg?v=1788437987","url":"https:\/\/voomisupply.com\/products\/value-collection-581887br-hex-socket-cap-screw-1-1-8-12-unf","provider":"Voomi Supply","version":"1.0","type":"link"}