Value Collection 32157 Carriage Bolt 1/4-20 2 in Grade 5

Product Description

The VALUE COLLECTION 32157 is a 1/4-20 UNC carriage bolt with a 2-inch length under head, designed for general fastening applications across construction, mechanical, and fabrication work. The square neck below the dome head locks into wood or punched metal to prevent rotation during tightening, eliminating the need for a second wrench on the bolt side. Made from Grade 5 steel with a zinc-plated finish, this bolt balances tensile strength with corrosion resistance suitable for interior and light exterior environments. It is a standard inch-system fastener used by carpenters, ironworkers, contractors, and maintenance trades.

This carriage bolt is suited for wood-to-wood and wood-to-metal connections in residential framing, decking, equipment mounting, and general structural assembly. The zinc-plated finish provides basic corrosion protection appropriate for dry or low-moisture conditions. The 1/4-20 UNC thread pattern is one of the most common inch-standard thread sizes, making hardware and matching nuts widely available. Supplied as a single unit with a minimum order quantity of 100 pieces.

Key Features

• 1/4-20 UNC thread for broad hardware compatibility
• Square neck below head prevents rotation during fastening without a backup tool
• Grade 5 steel construction for reliable tensile and shear strength
• Zinc-plated finish resists corrosion in dry and low-moisture environments
• 2-inch length under head suits common panel and lumber thicknesses
• Inch-system fastener compatible with standard UNC nuts and hardware

Compatibility

Designed as a standard 1/4-20 UNC inch-system carriage bolt for use with matching UNC hex nuts and washers in wood and light structural metal applications.

Installation Notes

Installation is performed by tradespeople and contractors using a standard wrench or socket on the nut side. The square neck must seat fully into the substrate to prevent spin during torque application. Always drill a clean pilot hole sized to the bolt shank diameter before driving the fastener. Follow applicable building codes, including IBC and local structural fastener requirements, when used in load-bearing assemblies.