{"product_id":"value-collection-581755br-hex-socket-cap-screw-7-8-9-unc","title":"Value Collection 581755BR Hex Socket Cap Screw 7\/8-9 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 581755BR is a hex socket cap screw designed for high-strength fastening in mechanical assemblies, tooling, and structural applications. Manufactured from alloy steel with a black oxide finish, this fastener delivers solid clamping force and corrosion resistance in demanding environments. The 7\/8-9 UNC thread profile follows Unified National Coarse standards, and the 1-1\/4 inch length under head suits moderate-depth through-bolting and tapped-hole applications. A 3\/4 inch hex drive accommodates standard hex keys and Allen drivers. This screw is specified and installed by machinists, millwrights, maintenance mechanics, and fabricators working to ASME\/ANSI and ASTM standards.\u003c\/p\u003e\n\u003cp\u003eThis fastener is used across industrial, commercial, and OEM applications wherever a recessed-drive, high-strength cap screw is required. Common install scenarios include machine frames, fixtures, tooling plates, and equipment mounts. The partially threaded shank provides a bearing shoulder for precision alignment in bolted joints. It is suitable for use in steel, cast iron, and other ferrous assemblies where the 7\/8-9 UNC thread pitch is specified by the original design or maintenance standard.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e7\/8-9 UNC thread — coarse pitch for fast engagement in tapped holes\u003c\/li\u003e\n  \u003cli\u003e1-1\/4 inch length under head — suits moderate-depth fastening applications\u003c\/li\u003e\n  \u003cli\u003eAlloy steel construction — high tensile and shear strength per ASTM A574\u003c\/li\u003e\n  \u003cli\u003eBlack oxide finish — mild corrosion resistance and reduced light reflection\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank — provides shoulder bearing for accurate joint alignment\u003c\/li\u003e\n  \u003cli\u003e3\/4 inch hex drive — compatible with standard hex keys and drive tools\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style and replacement fastener for applications specifying a 7\/8-9 UNC hex socket cap screw per ASME\/ANSI B18.3 and ASTM A574 standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified mechanics, machinists, or maintenance technicians using a 3\/4 inch hex key or Allen driver. Ensure the mating tapped hole is clean, properly threaded to 7\/8-9 UNC, and free of debris before installation. Follow the torque specifications prescribed by the equipment manufacturer or applicable engineering standard for the joint material and fastener grade. Do not substitute a lower-grade fastener in applications where ASTM A574 alloy steel is specified.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 7\/8-9 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 1-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull or Partial Threading\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Size\u003c\/strong\u003e: 3\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Coating\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: 1.5 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: 581755BR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51695680749874,"sku":"581755BR","price":19.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/82c809c2b9d5fe4f91a03274dae30a82.jpg?v=1788337395","url":"https:\/\/voomisupply.com\/products\/value-collection-581755br-hex-socket-cap-screw-7-8-9-unc","provider":"Voomi Supply","version":"1.0","type":"link"}