Value Collection 32175 Carriage Bolt 3/4-10 6 in Grade 5

Product Description

The VALUE COLLECTION 32175 is a 3/4-10 carriage bolt with a 6-inch length under head, manufactured from Grade 5 steel with a zinc-plated finish. Carriage bolts feature a domed head and a square neck that seats into the material being fastened, preventing rotation during tightening without requiring a wrench on the bolt head. This bolt uses Unified National Coarse (UNC) thread standards and is sized for heavy-duty structural and mechanical fastening applications. The zinc plating provides a baseline level of corrosion resistance suitable for general indoor and sheltered outdoor use. Tradespeople across construction, mechanical, and maintenance trades rely on this bolt style for wood-to-metal and structural assembly work.

This carriage bolt is suited for structural connections in wood framing, equipment mounting, and general mechanical assemblies where a flush or recessed fastener head is needed on one face of the joint. The square neck design locks into wood or pre-punched square holes in metal, allowing a nut to be driven from the opposite side without holding the bolt. It is an appropriate choice for decks, framing hardware, HVAC equipment bases, and general fabrication work requiring a 3/4-inch fastener.

Key Features

• 3/4-10 UNC thread for broad nut and hardware compatibility
• 6-inch length under head accommodates thick material stacks
• Square neck resists rotation during installation without a backup tool on the bolt head
• Grade 5 steel provides medium-high tensile strength for structural fastening
• Zinc-plated finish offers baseline corrosion resistance for general-purpose use

Compatibility

Designed as a standard UNC 3/4-10 carriage bolt compatible with any 3/4-10 hex nut, coupling nut, or threaded insert conforming to Unified National Coarse thread standards.

Installation Notes

Installation is performed by driving the bolt through a pre-drilled hole sized to the shank diameter so the square neck seats flush and locks against rotation. A standard wrench or socket is used to tighten the nut from the opposite side. Always drill clearance holes to the correct diameter to ensure proper square-neck seating. Follow applicable structural and building codes when using carriage bolts in load-bearing connections.