Hillman Fasteners 240336 Carriage Bolt 1/2-13x7 in 25 Pack

Product Description

The HILLMAN FASTENERS 240336 is a 1/2-13 x 7 inch steel carriage bolt designed for structural fastening applications in construction, framing, and heavy-duty assembly work. It features a round head profile with a square neck that locks into wood or composite materials to prevent rotation during installation. The coarse thread pattern provides strong holding power in wood, timber, and similar substrates. This bolt is sold in a 25-pack, making it practical for job-site use where multiple fasteners are needed in a single application. Licensed contractors, carpenters, and general tradespeople install this type of fastener regularly in both residential and light commercial projects.

This carriage bolt is suited for through-bolting applications in wood framing, deck construction, fencing, pergolas, and general structural assemblies. The 7 inch length accommodates thicker material stacks, such as doubled or tripled lumber. The coarse thread engages quickly and resists loosening under vibration and load. It is typically paired with a standard hex nut and washer. The 25-pack quantity is sized for contractors completing repetitive fastening tasks on a single project rather than small one-off repairs.

Key Features

• 1/2-13 thread size with coarse pitch for fast engagement in wood and structural lumber
• 7 inch length suitable for thick material assemblies and through-bolt connections
• Round dome head with square neck prevents spinning during nut tightening without a wrench on the bolt head
• Steel construction for strength in load-bearing structural connections
• 25-pack quantity supports multi-fastener installations without multiple procurement steps

Compatibility

Designed as a standard 1/2-13 coarse thread carriage bolt for use with compatible 1/2-13 hex nuts and washers in wood-to-wood and wood-to-metal structural fastening applications.

Installation Notes

Carriage bolts are typically installed by inserting the bolt through a pre-drilled hole sized to match the shank diameter, then seating the square neck flush into the material by tapping the head with a hammer. A washer and hex nut are threaded onto the exposed end and tightened with a wrench. Follow applicable building codes, including IRC or IBC requirements, for structural fastener sizing and spacing. Verify material compatibility and load ratings before use in critical structural connections.