{"product_id":"bowmalloy-36449-hex-head-cap-screw-5-8-18-x-2-in-grade-9","title":"Bowmalloy 36449 Hex Head Cap Screw 5\/8-18 X 2 in Grade 9","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe BOWMALLOY 36449 is a Grade 9 alloy steel hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. It features a 5\/8-18 UNF thread size with a 2-inch length under the head and is partially threaded for precise clamping in bolted joints. The clear zinc chromate finish provides corrosion resistance in moderate environments. This fastener is installed by machinists, millwrights, equipment technicians, and mechanical contractors where high-tensile, fine-thread fastening is required.\u003c\/p\u003e\n\u003cp\u003eThis hex head cap screw is suited for use in heavy equipment, industrial machinery, and mechanical assemblies that demand a fine-thread, high-grade fastener. The 5\/8-18 UNF thread pattern offers greater thread engagement and vibration resistance compared to coarse-thread equivalents, making it a common choice in close-tolerance applications. It is appropriate for both OEM manufacturing and field repair scenarios where Grade 9 alloy steel strength is specified.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 9 alloy steel construction for high tensile strength in demanding fastening applications\u003c\/li\u003e\n  \u003cli\u003e5\/8-18 UNF fine thread provides superior thread engagement and vibration resistance\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank allows precise clamping force without thread interference in the grip zone\u003c\/li\u003e\n  \u003cli\u003eClear zinc chromate finish offers moderate corrosion protection in industrial environments\u003c\/li\u003e\n  \u003cli\u003eInch measurement system for compatibility with standard SAE tooling and hardware\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 specifying a 5\/8-18 UNF Grade 9 hex head cap screw with a 2-inch length under head and partial threading.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by qualified mechanical or maintenance technicians using standard SAE hex tooling. Always de-energize and lock out equipment before replacing structural fasteners. Verify thread engagement depth and mating hardware grade before torquing. Do not mix Grade 9 fasteners with lower-grade nuts or threaded inserts not rated for the application.\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: 2 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: 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\u003eMeasurement System\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 0.01 pounds\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: BOWMALLOY\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 36449\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BOWMALLOY","offers":[{"title":"Default Title","offer_id":52038617956658,"sku":"36449","price":110.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ada62144e822bd4dc28cc05adb8edf89_2fec5ec0-27cb-4072-889f-3f9de6a6a6be.jpg?v=1790025515","url":"https:\/\/voomisupply.com\/products\/bowmalloy-36449-hex-head-cap-screw-5-8-18-x-2-in-grade-9","provider":"Voomi Supply","version":"1.0","type":"link"}