Hillman Fasteners 240036 Carriage Bolt 1/4-20 X 3 in 100 Pack

Product Description

The HILLMAN FASTENERS 240036 is a 1/4-20 x 3-inch steel carriage bolt sold in a 100-count pack. It features a round head, square neck, and coarse thread pattern. The square neck seats into wood or soft material to prevent rotation during installation, eliminating the need to hold the bolt head while tightening the nut. This fastener is a standard choice for carpenters, electricians, plumbers, and general contractors working on structural connections, wood framing, equipment mounting, and utility supports. The coarse 1/4-20 thread provides reliable engagement in a wide range of materials.

This carriage bolt is used in light structural, woodworking, and equipment-mounting applications across residential and commercial job sites. Common uses include securing lumber-to-lumber connections, attaching brackets and straps, mounting electrical enclosures to wood backing, and fastening handrails or deck framing. The 3-inch length suits medium-depth assemblies where a standard hex bolt or lag screw is not appropriate. Sold in a box of 100, this pack suits contractors and service technicians who need job-site quantity without special ordering.

Key Features

• 1/4-20 coarse thread for fast engagement and strong pull-through resistance
• 3-inch length fits medium-depth wood and bracket assemblies
• Round dome head provides a finished appearance on exposed faces
• Square neck locks into material to prevent spinning during nut installation
• Steel construction for general-duty structural and fastening applications
• 100-count pack reduces reorder frequency on active job sites

Compatibility

Designed as a standard 1/4-20 coarse-thread carriage bolt suitable for use with any 1/4-20 nut and washer in wood, composite, or light-gauge metal fastening applications.

Installation Notes

Installation requires drilling a clearance hole sized to the bolt diameter through the mating materials before driving the bolt through. Tap the round head flush so the square neck bites into the material and prevents rotation, then thread a 1/4-20 nut and washer from the opposite side and tighten with a wrench. Follow applicable building codes, including IRC and IBC fastener requirements, for structural connections. Do not overtighten, as the square neck embedment in soft wood can strip if torque is excessive.