Value Collection C39033 Flange Bolt 1/2-13 Unc 1 in Grade 8

Product Description

The VALUE COLLECTION C39033 is a smooth flange bolt designed for high-strength fastening applications in mechanical, structural, and industrial assembly work. It features a 1/2-13 UNC thread profile, a 1-inch length under head with full threading, and a 1-5/64 inch (1.0781 inch) flange diameter. Manufactured from Grade 8 alloy steel to SAE J429 standards, this bolt delivers the tensile and proof-load performance required for demanding load-bearing connections. The smooth flange distributes clamping load over a wider bearing surface without a separate washer, reducing the number of components needed in the assembly. It is supplied uncoated and sold in a package quantity of 25.

This bolt is suited for heavy-duty mechanical assemblies, equipment fabrication, and structural connections where Grade 8 tensile strength is specified. The smooth flange design is commonly used in automotive, agricultural, and industrial manufacturing environments where consistent clamp load and simplified fastening are priorities. It is appropriate for any application requiring a 1/2-13 UNC fully threaded hex-drive bolt meeting SAE J429 Grade 8 requirements.

Key Features

• Grade 8 alloy steel construction meets SAE J429 for high tensile strength and proof load
• 1/2-13 UNC thread size with full threading along the 1-inch length under head
• Smooth flange diameter of 1-5/64 inches (1.0781 inches) acts as an integrated bearing surface
• Hex drive for standard socket or wrench installation
• Uncoated finish — suitable for painting, plating, or use as-is in dry or protected environments
• Sold in a package quantity of 25 with a minimum order quantity of 1

Compatibility

Designed as a standard SAE J429 Grade 8 smooth flange fastener for use in any mechanical or structural assembly specifying a 1/2-13 UNC fully threaded hex flange bolt with a 1-inch length under head.

Installation Notes

Installation is performed by mechanical assemblers, millwrights, or maintenance technicians using standard hex sockets or wrenches sized for a 1/2-inch bolt. De-energize or lock out all equipment before replacing fasteners in live assemblies. Verify that mating threads and flange bearing surfaces are clean and free of debris before torquing. Do not exceed the torque specification required by the equipment manufacturer or applicable structural design specification for Grade 8 fasteners of this size.