1/4-20 x 1 Carriage Blt HDG

Overview

The 1/4-20 x 1 Carriage Bolt HDG (05475) is designed for hardware fastening applications requiring a secure, non-rotating bolt connection, particularly in wood assemblies.

Technical Features

• Domed head profile: The low-profile, rounded head sits flush and smooth on the surface, eliminating sharp protrusions that could cause snagging or injury.
• Short square section under the head: The square shoulder embeds into the mating material — typically wood — and locks the bolt in place, preventing rotation during nut tightening without requiring a wrench on the bolt end.
• 1/4-20 thread specification: A 1/4-inch nominal diameter with 20 threads per inch (UNC standard) ensures compatibility with standard 1/4-20 nuts and hardware.
• 1-inch shank length: A compact length suited for thinner stock and light-duty through-bolt connections.
• Hot-Dip Galvanized (HDG) finish: The galvanized coating provides a corrosion-resistant barrier, making this fastener suitable for outdoor, treated lumber, and moisture-exposed applications.

Applications

• Wood-to-wood connections in outdoor structures such as decks, fences, and pergolas
• Attachment of hardware fittings to wooden framing or posts
• General construction and carpentry fastening where a flush, tamper-resistant bolt head is required
• Use with pressure-treated lumber where corrosion resistance from the HDG finish is critical