{"product_id":"value-collection-c39051-flange-bolt-5-8-11-unc-3-in-grade-8","title":"Value Collection C39051 Flange Bolt 5\/8-11 Unc 3 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION C39051 is a partially threaded smooth flange bolt designed for structural fastening applications requiring a load-distributing flange head. Built from Grade 8 alloy steel and left uncoated, this bolt features a 5\/8-11 UNC thread pattern with 1.5 inches of threaded length on a 3-inch length-under-head shank. The integrated smooth flange measures 1.3281 inches (1-21\/64 inches) in diameter, spreading clamp load across the bearing surface without a separate washer. Hex drive allows standard socket or wrench installation. Manufactured to IFI 111 and SAE J429 standards, making it a verified option for high-strength mechanical assemblies.\u003c\/p\u003e\n\u003cp\u003eThis bolt is suited for heavy-duty mechanical, industrial, and trade applications where Grade 8 tensile strength and UNC threading are specified. Typical installation scenarios include structural steel connections, equipment mounting, and machine assembly where flange-style heads are preferred to eliminate loose washers and maintain consistent clamp loads. The partially threaded shank provides a smooth bearing surface through the joint interface, which is important in shear-loaded connections. Professionals in HVAC equipment rigging, plumbing equipment mounting, and general industrial maintenance will recognize this as a standard high-strength fastener for demanding service.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eGrade 8 alloy steel construction for high tensile and proof load strength\u003c\/li\u003e\n  \u003cli\u003e5\/8-11 UNC thread standard with 1.5 inches of threaded engagement length\u003c\/li\u003e\n  \u003cli\u003eSmooth flange head at 1.3281 inches diameter distributes clamping load without a separate washer\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank allows clean shear-zone bearing through joint material\u003c\/li\u003e\n  \u003cli\u003eHex drive compatible with standard sockets and open-end wrenches\u003c\/li\u003e\n  \u003cli\u003eMeets IFI 111 and SAE J429 fastener standards\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as a standard 5\/8-11 UNC Grade 8 smooth flange bolt suitable for structural and mechanical assemblies specifying IFI 111 or SAE J429 compliant high-strength fasteners.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed with a standard hex socket or combination wrench sized for a 5\/8-inch bolt head. Verify mating thread condition and ensure the flange seating surface is clean and free of debris before torquing. Follow the applicable fastener torque specification table for Grade 8 5\/8-11 UNC bolts as defined by your project or equipment OEM documentation. Do not exceed rated proof load, and inspect threads for damage before reuse in critical joints.\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 UNC\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\u003eThread Length\u003c\/strong\u003e: 1.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThreading\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDrive Type\u003c\/strong\u003e: Hex\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlange Type\u003c\/strong\u003e: Smooth\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFlange Diameter\u003c\/strong\u003e: 1.3281 inches (1-21\/64 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 8\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Uncoated\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandards\u003c\/strong\u003e: IFI 111, 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: 0.01 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: C39051\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51693717356850,"sku":"C39051","price":56.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/1957cf072462af46618fbf41831185e4.jpg?v=1788316484","url":"https:\/\/voomisupply.com\/products\/value-collection-c39051-flange-bolt-5-8-11-unc-3-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}