Value Collection 821140MSC Flange Bolt 3/8-16 Unc 2in Grade 8

Product Description

The VALUE COLLECTION 821140MSC is a smooth flange bolt designed for high-strength fastening applications in mechanical, industrial, and structural assemblies. It features a 3/8-16 UNC thread with a 2-inch length under head and partial threading of 1 inch, leaving a smooth shank section for shear-load bearing. The 13/16-inch flange diameter distributes clamping load across 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 SAE J429 standards and delivers the tensile and proof-load ratings that demanding fastening applications require. Machinists, millwrights, and maintenance technicians are the typical installers.

This flange bolt is suited for automotive, heavy equipment, agricultural machinery, and general industrial assembly work where a secure, washer-free clamping surface is needed. The partially threaded shank makes it appropriate for joints where the bolt passes through a clearance hole and threads into a tapped bore or nut, providing better shear resistance than a fully threaded fastener. The phosphate and oil finish offers moderate corrosion resistance and aids in controlled torque application during installation. Minimum order quantity is 100 pieces, making this part appropriate for production-line procurement or high-volume maintenance operations.

Key Features

• 3/8-16 UNC thread for compatibility with standard inch-series tapped holes and nuts
• Partially threaded shank (1 inch of thread) improves shear load performance at joint interfaces
• 13/16-inch smooth flange integrates a load-spreading surface directly on the bolt head, eliminating a separate washer
• Grade 8 alloy steel construction meets SAE J429 proof load and tensile strength requirements
• Phosphate and oil finish provides moderate corrosion protection and aids torque control during assembly
• Hex drive head for use with standard open-end, box, or socket wrenches

Compatibility

Designed as a standard inch-series smooth flange bolt for use in any application calling for a 3/8-16 UNC, 2-inch Grade 8 partially threaded flange fastener per SAE J429.

Installation Notes

Installation is performed using a standard hex wrench or socket sized for the bolt head. Follow the torque specifications provided by the equipment or assembly manufacturer for Grade 8 fasteners at this thread size, and ensure mating threads are clean and free of debris before installation. Do not reuse bolts that have been torqued to yield. Consult applicable industry standards for proper joint design and fastener selection when used in structural or safety-critical assemblies.