Value Collection R50000271 Carriage Bolt 3/8-16 Unc 8 in

Product Description

The VALUE COLLECTION R50000271 is a 3/8-16 UNC carriage bolt with a standard square neck and 8 inches of length under the head. Manufactured from Grade 2 steel with a zinc-plated finish, this fastener is built for general-purpose structural and mechanical applications. The square neck seats into the mating material to resist rotation during installation, eliminating the need for a wrench on the bolt head. It meets ASTM A307 standards, making it suitable for low-carbon steel fastener applications across a wide range of trade and construction uses.

This carriage bolt is commonly used in wood-to-wood, wood-to-metal, and light structural connections found in residential and commercial construction, HVAC equipment mounting, electrical enclosure fabrication, and general mechanical assembly. The 8-inch under-head length accommodates thicker material stacks or applications requiring extended reach through multiple layers. Installers in carpentry, ironwork, and general mechanical trades will find this bolt a standard fit for everyday fastening tasks.

Key Features

• 3/8-16 UNC thread form for broad compatibility with standard nuts and tapped holes
• 8 inches length under head for extended reach through thick material assemblies
• Standard square neck prevents bolt rotation during nut tightening
• Grade 2 steel construction meets ASTM A307 specifications
• Zinc-plated finish provides basic corrosion resistance for indoor and sheltered applications

Compatibility

Designed as a standard 3/8-16 UNC carriage bolt suitable for use with any 3/8-16 hex nut or coupling nut in general structural and mechanical fastening applications.

Installation Notes

Installation is typically performed by carpenters, ironworkers, or general mechanical contractors using a standard socket or open-end wrench on the nut side. Insert the bolt through the pre-drilled hole so the square neck seats fully into the material before applying the nut. Tighten from the nut side only — applying torque to the domed head will not drive the fastener. Verify hole diameter and material thickness are appropriate for the 3/8-inch shank before assembly.