{"product_id":"value-collection-mp39451-hex-cap-screw-5-8-18-x-2-1-2-in-grade-8","title":"Value Collection MP39451 Hex Cap Screw 5\/8-18 X 2-1\/2 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION MP39451 is a partially threaded hex head cap screw designed for high-strength fastening applications in industrial, mechanical, and structural assemblies. Manufactured from Grade 8 steel with a zinc yellow dichromate finish, this fastener delivers superior tensile strength and corrosion resistance compared to lower-grade alternatives. The 5\/8-18 UNF thread pitch paired with a 2-1\/2-inch length under head makes it well suited for precision-fit bolted connections where fine-thread engagement and controlled clamping force are required. This screw conforms to ASME B18.2.1 dimensional standards. Sold in a package of 10.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is used in a wide range of commercial and industrial fastening applications, including machinery assembly, equipment mounting, and structural bolted joints where high shear and tensile load capacity is critical. The fine UNF thread series provides greater thread engagement per inch than coarse-thread equivalents, making it a common choice in applications involving vibration or precise torque control. It is installed by millwrights, maintenance technicians, and mechanical contractors working on production equipment, heavy machinery, and fabricated assemblies.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 steel construction for high tensile and proof load ratings\u003c\/li\u003e\n  \u003cli\u003eZinc yellow dichromate finish provides corrosion and abrasion resistance\u003c\/li\u003e\n  \u003cli\u003e5\/8-18 UNF fine-thread series for precise engagement and vibration resistance\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank allows for clean bearing surface in bolted joints\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME B18.2.1 dimensional standards\u003c\/li\u003e\n  \u003cli\u003ePackaged in quantities of 10 per unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard ASME B18.2.1 hex head cap screw for use in inch-series bolted assemblies requiring a 5\/8-18 UNF partially threaded fastener in Grade 8 steel.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by qualified mechanical or maintenance technicians following applicable torque and fastener specifications for the assembly. Always verify that the mating thread, material, and load requirements are compatible with Grade 8 steel fasteners before installation. Use appropriate hand tools or impact equipment rated for the fastener size. Ensure fastener and mating surfaces are clean and free of debris before assembly.\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\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 2-1\/2 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\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 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish Coating\u003c\/strong\u003e: Zinc Yellow Dichromate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASME B18.2.1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 10\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: VALUE COLLECTION\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: MP39451\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51720881963314,"sku":"MP39451","price":34.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/530e4ce95d8ba7658706aba8d6f6dee6_ebab82fe-4adb-45e8-87c2-2eadf25c77f4.jpg?v=1788570434","url":"https:\/\/voomisupply.com\/products\/value-collection-mp39451-hex-cap-screw-5-8-18-x-2-1-2-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}