Value Collection 821184MSC Flange Bolt 1/4-20 Unc 5/8 in Grade 8

Product Description

The VALUE COLLECTION 821184MSC is a smooth flange bolt designed for applications requiring a built-in bearing surface without a separate washer. The 1/4-20 UNC thread pattern runs the full length of the 5/8-inch shank, providing consistent grip and load distribution along the entire fastened joint. The 9/16-inch smooth flange spreads clamping force across a wider area, reducing the risk of surface damage or pull-through in softer materials. Constructed from Grade 8 alloy steel with a phosphate and oil finish, this bolt delivers high tensile strength and baseline corrosion resistance for demanding mechanical and structural assemblies.

This fastener is suited for use in industrial machinery, automotive assemblies, structural brackets, and general mechanical fabrication where a high-strength, fully threaded flange bolt is specified. The hex drive allows installation with standard hex wrenches or sockets. The smooth flange face is appropriate where a serrated flange is not required or where surface marring must be avoided. Machinists, maintenance technicians, and assembly mechanics commonly use this bolt in production and repair environments.

Key Features

• 1/4-20 UNC fully threaded shank, 5/8 inches length under head
• 9/16-inch smooth flange diameter distributes clamping load without a separate washer
• Grade 8 alloy steel construction for high tensile and shear strength
• Phosphate and oil finish provides corrosion and wear resistance
• Hex drive compatible with standard wrenches and sockets
• Meets IFI 111 and SAE J429 fastener standards

Compatibility

Designed as a standard inch-series flange bolt for use in any assembly calling for a 1/4-20 UNC fully threaded smooth flange bolt in Grade 8 alloy steel.

Installation Notes

Installation is performed by machinists or mechanical technicians using a hex wrench or socket driver. Ensure mating threads are clean and free of debris before installation. Apply thread-locking compound or torque to specification per the host assembly's engineering drawings. Do not mix inch-series and metric fasteners in the same joint.