Value Collection CAI203701250-050B Carriage Bolt 3/8-16

Product Description

The VALUE COLLECTION CAI203701250-050B is a Grade 2 steel carriage bolt with a 3/8-16 UNC thread and a 1-1/4 inch length under head. The square neck seats flush into wood or structural material to prevent rotation during fastening, eliminating the need for a wrench on the bolt head. A zinc-plated finish provides basic corrosion resistance for general-purpose indoor and light outdoor applications. This fastener meets ASTM A307 standards and is sold in a minimum order quantity of 50 pieces per purchase, making it suited for contractors, maintenance professionals, and tradespeople who require consistent stock of common fasteners.

This carriage bolt is used in general construction, equipment assembly, wood framing connections, and light structural fastening where a smooth, round head is required on the exposed face. The 3/8-16 UNC thread is one of the most common sizes in residential and light commercial construction. Typical applications include deck construction, fence installation, bracket mounting, and machine guards. Installation requires a standard wrench or socket on the nut side only, as the square neck locks into the material to resist turning.

Key Features

• 3/8-16 UNC thread for compatibility with standard nuts and tapped holes
• 1-1/4 inch length under head suits thin-stock and light structural connections
• Square neck design prevents bolt rotation without a secondary tool
• Grade 2 steel construction meets ASTM A307 fastener standards
• Zinc-plated finish offers basic corrosion resistance for general-purpose use
• Sold in multiples of 50 for consistent jobsite or shop inventory

Compatibility

Designed for use with standard 3/8-16 UNC hex nuts and flat or lock washers in general-purpose fastening applications involving wood, steel, or composite materials.

Installation Notes

Carriage bolts are typically installed by trades workers and general contractors using a standard wrench or impact socket on the nut side. Insert the bolt through a pre-drilled hole sized to allow the square neck to seat and grip the material surface. Apply a flat washer and nut to the threaded end and tighten to draw the neck fully into the substrate before final torque is applied. Always follow applicable building codes and structural specifications for fastener selection and placement.