Value Collection 3GBC906C1000 Carriage Bolt 3/8-16 10 in

Product Description

The VALUE COLLECTION 3GBC906C1000 is a 3/8-16 UNC carriage bolt designed for structural fastening applications where a smooth, rounded head and self-locking square neck are required. The bolt measures 10 inches in length under the head and features partial threading, meaning the shank near the head remains unthreaded to resist rotation once seated in a timber or structural member. Constructed from Grade 1006-1050 steel with a galvanized zinc-plated finish, this fastener resists corrosion in moderate-exposure environments. It conforms to ASME B18.5 dimensional standards and is sized in the inch measurement system, making it compatible with standard SAE tooling and hardware.

This carriage bolt is used in wood-to-wood and wood-to-metal connections across residential construction, light commercial framing, dock and deck building, fence installation, and agricultural structures. The square neck beneath the dome head bites into wood substrate when a nut is tightened from the opposite side, eliminating the need to hold the bolt head during installation. This design is common in applications handled by carpenters, general contractors, and maintenance professionals working with dimensional lumber and structural panels.

Key Features

• 3/8-16 UNC thread size with partial threading for self-anchoring in wood
• 10-inch length under head accommodates thick timber and multi-layer assemblies
• Square neck locks into wood substrate to prevent rotation during nut installation
• Galvanized zinc-plated finish provides corrosion resistance for indoor and moderate outdoor use
• Grade 1006-1050 steel construction meets ASME B18.5 dimensional standards

Compatibility

Designed as a standard ASME B18.5 inch-series carriage bolt for use with 3/8-16 UNC hex nuts and washers in wood framing, structural lumber connections, and similar fastening applications.

Installation Notes

Installation is typically performed by carpenters, general contractors, or maintenance tradespeople using standard hand or power tools. Drill a clearance hole sized to the bolt shank diameter through the workpiece before inserting the bolt. Drive the square neck flush into the wood so the head seats fully before threading a washer and nut from the opposite side. Do not overtighten with impact tools, as this can pull the square neck through softer wood species and compromise clamping force.