Value Collection C39027 Smooth Flange Bolt 3/8-16 Unc Grade 8

Product Description

The VALUE COLLECTION C39027 is a smooth flange bolt designed for high-strength fastening applications where a built-in bearing surface is needed to distribute clamping load without a separate washer. The bolt features a 3/8-16 UNC thread profile, a fully threaded shank measuring 1-1/4 inches under the head, and a smooth flange diameter of 13/16 inches (0.8125 inches). Manufactured from Grade 8 alloy steel to SAE J429 specifications, this bolt is suited for demanding mechanical and structural assemblies. The uncoated finish leaves the fastener ready for use or field-applied coating as required by the application. Drive type is hex for standard wrench and socket tooling.

This bolt is a practical choice for mechanical assemblies, equipment mounting, and structural connections that require a UNC thread form in a 3/8-inch diameter. The smooth flange face seats cleanly against mating surfaces without marring, making it appropriate for use in HVAC equipment frames, pump and blower housings, panel mounting, and similar trade installations where vibration resistance and consistent clamp load matter. Sold in a package quantity of 25.

Key Features

• Grade 8 alloy steel construction meets SAE J429 mechanical requirements for high-strength fastening
• 3/8-16 UNC thread form is fully threaded along the 1-1/4-inch shank length under head
• Smooth flange diameter of 13/16 inches integrates a bearing surface, eliminating the need for a separate flat washer
• Hex drive is compatible with standard open-end, box, and socket wrenches
• Uncoated finish suitable for dry or protected installations or field coating
• Packaged in quantities of 25 for bench stock and service van inventory

Compatibility

Designed as a standard 3/8-16 UNC smooth flange bolt for use in any application requiring SAE J429 Grade 8 alloy steel hex-drive fasteners with an integrated flange bearing surface.

Installation Notes

Installation is performed with standard hex wrenches or sockets sized for a 3/8-inch fastener. Power down or de-energize any equipment before fastening into electrical enclosures, HVAC cabinets, or live mechanical assemblies. Apply thread locker or lock nuts as required by the equipment manufacturer or applicable service code when vibration is a concern. Do not exceed the torque ratings specified for Grade 8 fasteners in the relevant equipment or structural documentation.