{"product_id":"value-collection-581921br-hex-socket-cap-screw-1-1-4-12-unf","title":"Value Collection 581921BR Hex Socket Cap Screw 1-1\/4-12 Unf","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581921BR is a partially threaded hex socket cap screw designed for high-strength bolted assemblies requiring precise thread engagement and a recessed drive interface. Sized at 1-1\/4-12 UNF with a 5-inch length under head and a 7\/8-inch hex drive, this fastener is manufactured from alloy steel and finished with a black oxide coating for corrosion resistance. Compliant with ASME\/ANSI B18.3 and ASTM A574 standards, it is suited for industrial, mechanical, and structural applications where a flush or near-flush head profile is required. Machinists, millwrights, and maintenance technicians are the typical installers.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is used in medium-to-heavy mechanical assemblies, including machine tooling, equipment frames, hydraulic components, and structural fixtures where fine thread pitch provides superior holding power and vibration resistance compared to coarse thread alternatives. The 1-1\/4-12 UNF thread form is commonly found in precision industrial equipment requiring controlled clamp load and exact torque specifications. The partial threading design allows for a stronger unthreaded shank section, which is advantageous in shear-loaded joints.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1-1\/4-12 UNF fine thread for high clamp load and vibration resistance\u003c\/li\u003e\n  \u003cli\u003e5-inch length under head suits deep or thick-joint fastening applications\u003c\/li\u003e\n  \u003cli\u003e7\/8-inch hex socket drive for use with standard hex keys or socket drivers\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank provides enhanced shear strength at joint interfaces\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction meets ASTM A574 high-strength requirements\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish offers mild corrosion resistance and reduced surface glare\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard ASME\/ANSI B18.3 and ASTM A574 compliant hex socket cap screw for industrial and mechanical assemblies requiring a 1-1\/4-12 UNF partially threaded fastener.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified mechanic or millwright using a calibrated torque wrench and the appropriate 7\/8-inch hex key or socket. De-energize and lock out all equipment before fastener service to prevent injury. Black oxide finish does not substitute for heavy-duty corrosion protection in wet or outdoor environments; apply a thread lubricant or sealant as required by the application. Follow applicable machine or equipment manufacturer torque specifications when tightening.\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\/4-12 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 5 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: 0.01 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: 581921BR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51692819939634,"sku":"581921BR","price":53.21,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/e2816fc3ea1a0de3ebbded6c00312548_754349e8-b75e-4c86-9a22-c527a2fdc66a.jpg?v=1788303462","url":"https:\/\/voomisupply.com\/products\/value-collection-581921br-hex-socket-cap-screw-1-1-4-12-unf","provider":"Voomi Supply","version":"1.0","type":"link"}