{"product_id":"bowmalloy-36465-hex-head-cap-screw-5-8-18-x-8-in-grade-9","title":"Bowmalloy 36465 Hex Head Cap Screw 5\/8-18 X 8 in Grade 9","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BOWMALLOY 36465 is a Grade 9 alloy steel hex head cap screw sized 5\/8-18 x 8 inches, finished with a zinc-plated clear chromate coating for corrosion resistance. This partially threaded fastener is built to handle high-strength bolted joint applications where tensile demand exceeds what standard Grade 5 or Grade 8 hardware can reliably meet. The 5\/8-18 thread is a fine-pitch UNF series, providing stronger thread engagement and better resistance to loosening under vibration. It is specified and installed by millwrights, heavy equipment mechanics, structural fabricators, and maintenance technicians working in demanding industrial environments.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is suited for heavy-duty mechanical assemblies, structural connections, and equipment fabrication where high-clamp-load fasteners are required. The 8-inch body length accommodates thick stack-ups or deep joint configurations. The clear chromate zinc finish provides baseline atmospheric corrosion protection appropriate for indoor and sheltered outdoor installations. Sold in packages of 5, this fastener is a practical quantity for service and repair work as well as small-batch fabrication.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 9 alloy steel construction for elevated tensile and proof load capacity beyond Grade 8\u003c\/li\u003e\n  \u003cli\u003e5\/8-18 fine-pitch UNF thread for tighter thread engagement and vibration resistance\u003c\/li\u003e\n  \u003cli\u003e8-inch length under head accommodates deep or multi-layer joint configurations\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank provides a grip section for shear-load bearing\u003c\/li\u003e\n  \u003cli\u003eZinc-plated clear chromate finish delivers corrosion protection in sheltered environments\u003c\/li\u003e\n  \u003cli\u003ePackaged in quantities of 5, suitable for service, repair, and small fabrication runs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a high-strength replacement or service fastener for bolted assemblies requiring a 5\/8-18 UNF fine-pitch hex cap screw with Grade 9 alloy steel strength ratings.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is typically performed by millwrights, heavy equipment technicians, or structural fabricators using standard hex wrenches or impact tooling sized for 5\/8-inch hex cap screws. Always de-energize and lock out any equipment before fastener replacement or joint disassembly. Torque values should be sourced from the equipment manufacturer's specifications or applicable engineering standards for Grade 9 fasteners  -  do not substitute Grade 5 or Grade 8 torque tables. Inspect mating threads for damage or contamination before installation to ensure full thread engagement.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 5\/8-18 UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial\u003c\/strong\u003e: Alloy Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial Grade\u003c\/strong\u003e: Grade 9\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Clear Zinc Chromate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\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  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 5\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: BOWMALLOY\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 36465\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BOWMALLOY","offers":[{"title":"Default Title","offer_id":51971969188146,"sku":"36465","price":92.04,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6024124ef0b2d44d41db1c649ffbaad3_b04659f5-970c-4d13-8059-3e04a94bafbf.jpg?v=1789959745","url":"https:\/\/voomisupply.com\/products\/bowmalloy-36465-hex-head-cap-screw-5-8-18-x-8-in-grade-9","provider":"Voomi Supply","version":"1.0","type":"link"}