{"product_id":"value-collection-451138br-hex-head-cap-screw-5-8-18-x-10-in","title":"Value Collection 451138BR Hex Head Cap Screw 5\/8-18 X 10 in","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 451138BR is a Grade 8 steel hex head cap screw designed for high-strength fastening applications. Measuring 5\/8-18 thread size with a 10-inch length under head, this fastener uses a Unified National Fine (UNF) thread standard and features partial threading along the shank. The bright, uncoated finish leaves the steel bare for applications where coating adhesion, plating, or post-installation treatment is planned. Manufactured to ASME B18.2.1 standards, it is suited for use in assemblies requiring precise dimensional and mechanical tolerances. A 5\/16-inch hex key size applies for installation with standard hex drive tooling.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is appropriate for heavy-duty mechanical assemblies, structural connections, and equipment fabrication where a fine-thread, high-tensile fastener is required. The Grade 8 rating indicates a minimum tensile strength suitable for demanding load-bearing joints. Partial threading allows the unthreaded shank to act as a locating feature in close-tolerance bores, making this fastener common in machinery, agricultural equipment, and industrial assemblies. It is installed by millwrights, maintenance mechanics, and fabricators working on steel structures and mechanical systems.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 steel construction for high tensile strength in structural and mechanical applications\u003c\/li\u003e\n  \u003cli\u003e5\/8-18 UNF thread size for fine-thread engagement and reduced vibration loosening\u003c\/li\u003e\n  \u003cli\u003e10-inch length under head accommodates thick stock and deep through-bolt configurations\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank provides a smooth bearing surface in close-tolerance bores\u003c\/li\u003e\n  \u003cli\u003eBright\/uncoated finish compatible with post-installation plating or coating processes\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME B18.2.1 dimensional standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard-dimension replacement or new-installation fastener for any assembly specifying a 5\/8-18 UNF Grade 8 hex head cap screw with a 10-inch length under head per ASME B18.2.1.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified mechanic or fabricator using appropriate hex drive tooling sized to the 5\/16-inch hex key specification. Always confirm mating thread condition, hole depth, and clamp length before driving the fastener. Apply thread lubricant or anti-seize as required by the assembly specification. Follow all applicable engineering drawings and torque specifications provided by the equipment manufacturer for Grade 8 fasteners of this diameter.\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: 10 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNF\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull or Partial Threading\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: Bright\/Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHex Key Size\u003c\/strong\u003e: 5\/16 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard\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\u003eWeight\u003c\/strong\u003e: 0.9 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: 451138BR\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51715391127858,"sku":"451138BR","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/d264ecc2da06b31a594be48998c36f1e.jpg?v=1788513223","url":"https:\/\/voomisupply.com\/products\/value-collection-451138br-hex-head-cap-screw-5-8-18-x-10-in","provider":"Voomi Supply","version":"1.0","type":"link"}