{"product_id":"bowmalloy-36459-hex-head-cap-screw-5-8-18-x-5-in-grade-9","title":"Bowmalloy 36459 Hex Head Cap Screw 5\/8-18 X 5 in Grade 9","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BOWMALLOY 36459 is a Grade 9 alloy steel hex head cap screw designed for high-strength fastening applications in demanding mechanical and structural assemblies. It features a 5\/8-18 UNF thread size and a 5-inch length under the head with partial threading. The zinc-plated clear chromate finish provides corrosion resistance in standard service environments. Licensed mechanics, millwrights, and industrial maintenance technicians typically select Grade 9 fasteners where tensile strength requirements exceed what Grade 5 or Grade 8 hardware can deliver.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is suited for heavy equipment, industrial machinery, and structural connections that require fine-thread engagement and high clamp load. The 5\/8-18 UNF thread pitch offers finer thread engagement than its coarse-thread counterpart, making it appropriate for applications where vibration resistance and precise torque control are priorities. Partial threading allows for greater shank grip length in through-bolt configurations.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 9 alloy steel construction for high tensile and proof load strength\u003c\/li\u003e\n  \u003cli\u003e5\/8-18 UNF fine-thread pattern for improved vibration resistance and torque control\u003c\/li\u003e\n  \u003cli\u003e5-inch length under head with partial threading for extended grip length\u003c\/li\u003e\n  \u003cli\u003eZinc-plated clear chromate finish for corrosion protection in standard environments\u003c\/li\u003e\n  \u003cli\u003eHex head drive for standard socket and wrench installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a high-strength replacement or OEM-style fastener for applications requiring 5\/8-18 UNF Grade 9 hex head cap screws in inch-measurement assemblies.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified mechanic or millwright familiar with high-strength fastener torque requirements. Always clean and inspect mating threads before assembly. Use a calibrated torque wrench to achieve the specified clamp load for Grade 9 hardware per the applicable engineering standard. Do not substitute a lower-grade fastener in applications where Grade 9 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: 5\/8-18 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\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\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: 36459\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BOWMALLOY","offers":[{"title":"Default Title","offer_id":51993248432434,"sku":"36459","price":196.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/6024124ef0b2d44d41db1c649ffbaad3_547bf053-934a-48a0-a730-2de61e56aab1.jpg?v=1789990994","url":"https:\/\/voomisupply.com\/products\/bowmalloy-36459-hex-head-cap-screw-5-8-18-x-5-in-grade-9","provider":"Voomi Supply","version":"1.0","type":"link"}