{"product_id":"armor-coat-ust235846-hex-head-cap-screw-5-8-11-x-3-in-grade-8","title":"Armor Coat UST235846 Hex Head Cap Screw 5\/8-11 X 3 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe ARMOR COAT UST235846 is a Grade 8 steel hex head cap screw designed for high-strength fastening applications in mechanical, structural, and industrial assemblies. It features a 5\/8-11 UNC thread pattern with a 3-inch length under the head and is partially threaded, making it suitable for joints that require a smooth shank section for shear loading or precise bolt positioning. The Armor Coat finish provides corrosion resistance over the base steel. This fastener meets ASME B18.2.1 and SAE J429 standards, confirming dimensional and mechanical property compliance for demanding trade and OEM applications.\u003c\/p\u003e\n\u003cp\u003eThis cap screw is used wherever a Grade 8 hex fastener is specified in heavy equipment, machinery frames, structural steel connections, and industrial maintenance work. The 5\/8-11 thread size is common in agricultural equipment, construction machinery, and utility hardware. Partial threading allows the unthreaded shank to bear shear loads across joint interfaces, a configuration frequently called out in engineering drawings and OEM service documentation. Licensed mechanics, millwrights, pipefitters, and general contractors regularly install fasteners of this type.\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 requirements per SAE J429\u003c\/li\u003e\n  \u003cli\u003e5\/8-11 UNC thread pattern for broad compatibility with standard nuts and tapped holes\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank supports shear loading across bolted joints\u003c\/li\u003e\n  \u003cli\u003eArmor Coat finish adds corrosion resistance over the steel substrate\u003c\/li\u003e\n  \u003cli\u003eConforms to ASME B18.2.1 and ASME\/ANSI B18.2.1 dimensional standards\u003c\/li\u003e\n  \u003cli\u003e3-inch length under head suits medium-depth clamping applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a direct-fit Grade 8 hex head cap screw for any application requiring a 5\/8-11 UNC thread, 3-inch length under head, and partial threading per ASME B18.2.1 specifications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified mechanic or millwright following applicable torque specifications for Grade 8 fasteners of this thread size as published in engineering references or OEM service manuals. Always ensure mating nuts or tapped holes are rated for Grade 8 loads before assembly. De-energize and lock out any equipment before replacing structural fasteners. Do not substitute a lower-grade fastener where Grade 8 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\/8-11\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 3 inches\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: Armor Coat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: ASME B18.2.1, ASME\/ANSI B18.2.1, SAE J429\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: 0.0031 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: ARMOR COAT\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: UST235846\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ARMOR COAT","offers":[{"title":"Default Title","offer_id":67917893534002,"sku":"UST235846","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/8f0fa44ec9c8b528e6cd96cf9f49b4c4.jpg?v=1791266052","url":"https:\/\/voomisupply.com\/products\/armor-coat-ust235846-hex-head-cap-screw-5-8-11-x-3-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}