{"product_id":"value-collection-c39043-flange-bolt-1-2-13-unc-4-in-grade-8","title":"Value Collection C39043 Flange Bolt 1\/2-13 Unc 4 in Grade 8","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe VALUE COLLECTION C39043 is a smooth flange bolt designed for structural and mechanical fastening applications where a load-distributing flange head is required. Sized at 1\/2-13 UNC with a 4-inch length under the head, this bolt is partially threaded with 1.25 inches of thread engagement. The integrated smooth flange measures 1-5\/64 inches (1.0781 inches) in diameter, spreading clamp load across the mating surface without a separate washer. Manufactured from Grade 8 alloy steel and left uncoated, it meets IFI 111 and SAE J429 standards. Licensed tradespeople and maintenance technicians working on heavy equipment, machinery, and structural assemblies are the primary installers.\u003c\/p\u003e\n\u003cp\u003eThis flange bolt is suited for high-strength fastening in industrial, mechanical, and equipment-assembly applications. The partial threading design concentrates grip length in the unthreaded shank, making it appropriate for through-bolt installations where shear resistance matters. The hex drive allows standard socket or wrench installation. Sold in packages of 10, this bolt is commonly used in OEM-style repair and fabrication work requiring verified Grade 8 performance.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1\/2-13 UNC thread size with 1.25 inches of partial threading for controlled grip length\u003c\/li\u003e\n  \u003cli\u003e4-inch length under head accommodates thick-stack assemblies\u003c\/li\u003e\n  \u003cli\u003eSmooth flange diameter of 1-5\/64 inches (1.0781 inches) distributes clamp load without a separate washer\u003c\/li\u003e\n  \u003cli\u003eGrade 8 alloy steel construction for high tensile and proof load requirements\u003c\/li\u003e\n  \u003cli\u003eUncoated finish — compatible with field-applied coatings or used as-is in dry indoor environments\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 an OEM-style replacement or general-use fastener for industrial and mechanical assemblies requiring a 1\/2-13 UNC Grade 8 smooth flange bolt with a 4-inch length under head.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified mechanic, millwright, or maintenance technician familiar with Grade 8 fastener torque requirements. Always consult the equipment manufacturer's torque specification table before tightening — do not use generic torque values without verifying the specific joint design. Use a calibrated torque wrench and ensure mating threads are clean and free of debris before assembly. Inspect the flange seating surface for burrs or damage that could affect clamp load distribution.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Size\u003c\/strong\u003e: 1\/2-13 UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Standard\u003c\/strong\u003e: UNC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Length\u003c\/strong\u003e: 1.25 inches (1-1\/4 inches)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Style\u003c\/strong\u003e: Partially Threaded\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength Under Head\u003c\/strong\u003e: 4 inches\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: 1-5\/64 inches (1.0781 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 Coating\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\u003ePackage Quantity\u003c\/strong\u003e: 10\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSystem of Measurement\u003c\/strong\u003e: Inch\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: C39043\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VALUE COLLECTION","offers":[{"title":"Default Title","offer_id":51691946311986,"sku":"C39043","price":43.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/cac7e67336beabc58b2b16a948a511fa.jpg?v=1788291298","url":"https:\/\/voomisupply.com\/products\/value-collection-c39043-flange-bolt-1-2-13-unc-4-in-grade-8","provider":"Voomi Supply","version":"1.0","type":"link"}