{"product_id":"value-collection-403318br-hex-head-cap-screw-7-8-9","title":"Value Collection 403318BR Hex Head Cap Screw 7\/8-9","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 403318BR is a partially threaded hex head cap screw designed for general-purpose fastening in mechanical, structural, and industrial assemblies. It features a 7\/8-9 UNC thread size and measures 3-1\/2 inches under the head, making it suitable for medium-to-heavy fastening applications where a partially threaded shank is required for grip and shear strength. Constructed from Grade 2 steel with a zinc-plated finish, this fastener provides baseline corrosion resistance in dry and mildly humid environments. It is driven with a 1-5\/16 inch hex key or standard hex wrench. Machinists, millwrights, maintenance technicians, and general contractors are the typical installers.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is used in a wide range of residential and commercial construction, equipment assembly, and maintenance-repair-operations (MRO) applications. The partial threading allows the unthreaded shank to bear lateral loads while the threaded portion engages the nut or tapped hole securely. It is appropriate for wood-to-metal connections, machinery frames, structural steel connections, and similar assemblies where a Grade 2 steel fastener meets the load requirements.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e7\/8-9 UNC thread form for compatibility with standard inch-series nuts and tapped holes\u003c\/li\u003e\n  \u003cli\u003e3-1\/2 inch length under head provides ample grip for thick material stacks\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank improves shear strength and maintains alignment under lateral loads\u003c\/li\u003e\n  \u003cli\u003eGrade 2 steel construction meets general-purpose structural fastening requirements\u003c\/li\u003e\n  \u003cli\u003eZinc-plated finish offers baseline corrosion resistance in dry or mildly humid conditions\u003c\/li\u003e\n  \u003cli\u003e1-5\/16 inch hex drive fits standard open-end, box-end, and socket wrenches\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard inch-series UNC hex head cap screw compatible with 7\/8-9 nuts, threaded inserts, and tapped holes conforming to ASME B18.2.1 dimensional standards.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed with a 1-5\/16 inch hex wrench, socket, or impact driver with the appropriate socket. Ensure mating threads are clean and free of debris before assembly. Do not exceed the rated load for Grade 2 steel in high-tension or fatigue-critical applications where a higher-grade fastener may be required. Follow applicable structural or mechanical codes for torque and joint requirements.\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 3-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 2\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Zinc-Plated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Key Size\u003c\/strong\u003e: 1-5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.76 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31161501\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: 403318BR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51716944757042,"sku":"403318BR","price":35.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/5757d11f1fdd4bf9166883232568153b.jpg?v=1788533774","url":"https:\/\/voomisupply.com\/products\/value-collection-403318br-hex-head-cap-screw-7-8-9","provider":"Voomi Supply","version":"1.0","type":"link"}