Reliable Mfg FB-375 3/8-16 Hex Flange Bolt

The Reliable Mfg FB-375 is a 3/8-inch-16 hex flange bolt designed for automotive, marine, RV, and powersports applications where secure fastening with integrated load distribution is required. This flange bolt features a built-in circular flange under the hex head that functions as an integral washer, distributing clamping pressure over a wider surface area to prevent pull-through and surface damage.

Key Features:

• 3/8-inch diameter with 16 threads per inch (coarse thread)
• Hex head design for easy installation with standard wrenches or sockets
• Integrated flange eliminates the need for separate washers
• Flange distributes load evenly across fastening surface
• Suitable for automotive frames, equipment mounting, and heavy-duty assemblies
• Standard 9/16-inch wrench size for convenient installation

Hex flange bolts are commonly used in applications requiring reliable fastening with enhanced surface protection. The flange design provides superior holding power and reduces the risk of fastener pull-through on softer materials, making this bolt ideal for mounting brackets, body panels, frames, and mechanical assemblies across various vehicle types.