Value Collection 32171 Carriage Bolt 5/8-11 5in Grade 5

Product Description

The VALUE COLLECTION 32171 is a 5/8-11 carriage bolt with a 5-inch length under head, designed for heavy-duty fastening in structural and general-purpose applications. Manufactured from Grade 5 steel with a zinc-plated finish, this bolt provides solid corrosion resistance and mechanical strength suited for demanding shop, construction, and maintenance work. The square neck under the domed head locks the bolt in place when drawn through wood or soft material, preventing rotation during nut tightening without requiring a wrench on the bolt head. This style of fastener is a standard choice for carpenters, ironworkers, millwrights, and maintenance technicians working across wood-to-wood and wood-to-metal assemblies.

This carriage bolt is used in residential and light commercial construction, equipment fabrication, and general repair work. The 5/8-11 UNC thread pattern is a widely used coarse-thread standard, making hardware sourcing straightforward. The zinc-plated finish provides a base level of corrosion protection suitable for indoor and dry outdoor applications. Typical uses include timber framing, deck construction, machinery mounting, and structural panel fastening where a smooth, round head profile is required on the exposed face.

Key Features

• 5/8-11 UNC coarse thread for broad nut and hardware compatibility
• 5-inch length under head accommodates thick material stacks
• Square neck prevents bolt rotation during installation without a secondary wrench
• Grade 5 steel construction meets standard medium-strength fastener requirements
• Zinc-plated finish offers corrosion resistance for general indoor and sheltered outdoor use
• Smooth domed head provides a clean, snag-free exposed face

Compatibility

Designed as a standard 5/8-11 UNC carriage bolt suitable for use with any 5/8-inch compatible nut, washer, and hardware in wood-to-wood or wood-to-metal structural fastening applications.

Installation Notes

Installation is typically performed by carpenters, structural trades, or maintenance technicians using a standard socket or wrench on the mating nut. Insert the bolt through the pre-drilled hole so the square neck seats fully and flush into the material to prevent spin-out before torquing the nut. Follow applicable building codes and engineering specifications for structural fastener torque and spacing requirements. Do not use impact tools at high settings without confirming the square neck is fully seated, as this can strip the neck pocket in softer materials.