{"product_id":"value-collection-821275msc-smooth-flange-bolt-5-8-11-unc","title":"Value Collection 821275MSC Smooth Flange Bolt 5\/8-11 Unc","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION 821275MSC is a smooth flange bolt designed for high-strength fastening applications in mechanical, structural, and industrial assemblies. It features a 5\/8-11 UNC thread pattern, a 3-1\/4 inch length under head, and 1-1\/2 inches of partial threading. The hex drive head is paired with a smooth flange measuring 1-21\/64 inches (1.3281 inches) in diameter, which distributes clamping load over a wider bearing surface without the need for a separate washer. Manufactured from Grade 8 alloy steel with a phosphate and oil finish, this bolt meets IFI 111 and SAE J429 standards. It is installed by mechanics, millwrights, and industrial maintenance technicians.\u003c\/p\u003e\n\u003cp\u003eThis bolt is suited for high-load fastening in equipment frames, heavy machinery, automotive drivetrain components, and structural steel connections where a UNC thread form and Grade 8 strength rating are specified. The smooth flange face makes it appropriate for applications where a serrated flange could damage the mating surface or where torque distribution across a wider contact area is required. It is used in both OEM production assembly and field maintenance repair work.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e5\/8-11 UNC thread for compatibility with standard inch-series tapped holes and nuts\u003c\/li\u003e\n  \u003cli\u003eGrade 8 alloy steel construction for high tensile and proof load capacity\u003c\/li\u003e\n  \u003cli\u003eSmooth flange at 1-21\/64 inches diameter provides integrated washer-bearing surface\u003c\/li\u003e\n  \u003cli\u003ePartially threaded shank with 1-1\/2 inches of thread length, leaving a smooth grip section\u003c\/li\u003e\n  \u003cli\u003ePhosphate and oil finish for corrosion resistance and lubricity during installation\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 inch-series smooth flange bolt for use with 5\/8-11 UNC tapped holes or hex nuts in high-strength industrial, mechanical, and structural fastening applications.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation is performed by mechanics, millwrights, or maintenance technicians using a standard hex wrench or socket driver. Always verify that the mating tapped hole or nut is also rated for Grade 8 loading before torquing. Follow applicable torque specifications from your engineering drawings or fastener torque tables for 5\/8-11 UNC Grade 8 fasteners. Inspect threads for damage before installation and do not use the fastener if threads are galled or corroded.\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: 3-1\/4 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1-1\/2 inches\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\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: 1-21\/64 inches (1.3281 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: Phosphate and Oil\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: 0.3825 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: 821275MSC\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51695190409522,"sku":"821275MSC","price":14.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/2e54eea513b47461deb0a51dfa2bad63.jpg?v=1788332306","url":"https:\/\/voomisupply.com\/products\/value-collection-821275msc-smooth-flange-bolt-5-8-11-unc","provider":"Voomi Supply","version":"1.0","type":"link"}