Hillman Fasteners 240162 Carriage Bolt 3/8-16 X 2-1/2 in 50 Pack

Product Description

The HILLMAN FASTENERS 240162 is a 3/8-16 x 2-1/2 inch steel carriage bolt with a round head, square neck, and coarse thread pattern. Carriage bolts are designed for through-bolting wood-to-wood and wood-to-metal connections. The square neck locks into the material as the nut is tightened, preventing the bolt from spinning during installation. This 50-pack format suits contractors, maintenance crews, and tradespeople who need reliable fasteners in quantity for framing, equipment mounting, or structural assembly work.

Carriage bolts in this size range are commonly used in residential and light commercial construction, including deck framing, fence installation, structural wood connections, and equipment anchoring. The 3/8-16 coarse thread designation is a widely used standard size that pairs with standard 3/8-16 hex nuts and washers. The round dome head provides a finished appearance on the exposed face of the connection. This pack of 50 is suited for job-site stock or repetitive fastening tasks where consistent hardware is needed across multiple connection points.

Key Features

• 3/8-16 coarse thread for strong thread engagement and resistance to vibration loosening
• Round dome head with square neck prevents rotation during nut tightening without a tool on the bolt end
• Steel construction provides strength for structural and general-purpose connections
• 2-1/2 inch length suits medium-thickness wood-to-wood and wood-to-metal assemblies
• 50-pack quantity supports job-site bulk use and reduces per-unit cost on larger projects

Compatibility

Designed as a standard 3/8-16 coarse thread carriage bolt compatible with 3/8-16 hex nuts and flat washers in typical through-bolt applications for wood framing and general structural assembly.

Installation Notes

Carriage bolts are installed by driving the bolt through a pre-drilled hole sized to match the bolt diameter, allowing the square neck to seat flush into the material. A flat washer and hex nut are threaded onto the exposed end and tightened with a wrench. No tool is required on the bolt head once the square neck is seated. Follow applicable building codes, including IRC or IBC requirements, when using carriage bolts in structural connections.