Value Collection 821713MSC Flange Bolt 3/8-16 Unc 3/4 in Grade 8

Product Description

The VALUE COLLECTION 821713MSC is a smooth flange bolt designed for high-strength fastening applications where a bearing surface is needed without a separate washer. The bolt features a 3/8-16 UNC thread form and is fully threaded along its 3/4-inch length under head. The integrated smooth flange measures 13/16 inches in diameter, distributing clamp load evenly across the joint surface. Constructed from Grade 8 alloy steel with a phosphate and oil finish, it meets SAE J429 standards for mechanical properties. This fastener is suited for structural and mechanical assemblies requiring consistent torque retention and corrosion resistance in moderate environments.

Smooth flange bolts in this size range are commonly used in automotive, heavy equipment, agricultural machinery, and general industrial fabrication. The 3/8-16 UNC thread is a standard coarse-thread configuration that provides reliable engagement in steel and cast-iron tapped holes. The Grade 8 rating makes this bolt appropriate for high-load joints where lower-grade fasteners would be insufficient. Technicians and tradespeople working on equipment frames, brackets, mounting plates, and structural connections will find this bolt suitable for demanding service conditions.

Key Features

• 3/8-16 UNC fully threaded shank for maximum thread engagement along the entire 3/4-inch length under head
• Integrated smooth flange at 13/16 inches diameter eliminates the need for a separate flat washer
• Grade 8 alloy steel construction meets SAE J429 mechanical requirements for high-strength fastening
• Phosphate and oil finish provides baseline corrosion protection and lubricity for consistent torque values
• Hex drive head for use with standard box-end wrenches and sockets

Compatibility

Designed as a standard 3/8-16 UNC smooth flange bolt suitable for use in any tapped hole or nut application requiring a coarse-thread Grade 8 fastener with an integrated bearing flange.

Installation Notes

Installation is performed by millwrights, mechanics, and general tradespeople using standard hex sockets or box-end wrenches. Always verify that the tapped hole thread form, pitch, and engagement depth are compatible before installation. Apply torque per applicable engineering specifications for Grade 8 fasteners at this thread size. Inspect flange and seating surface for debris or damage before assembly to ensure proper clamp load distribution.