Value Collection 3GBC905C0104 Carriage Bolt 5/16-18

Product Description

The VALUE COLLECTION 3GBC905C0104 is a 5/16-18 carriage bolt with a 1-1/4 inch length under the head, designed for secure fastening in structural and general-purpose applications. The square neck beneath the domed head locks into wood or metal to prevent rotation during tightening. Manufactured from Grade 1006-1050 steel with a galvanized zinc-plated finish, it resists corrosion in exposed or moderately harsh environments. The bolt is fully threaded along its shank and conforms to ASME B18.5 standards, making it suitable for applications where dimensional consistency and load reliability are required. Licensed tradespeople and contractors rely on this bolt for framing, deck construction, and equipment mounting.

This carriage bolt is used across residential and light commercial construction, woodworking, and equipment assembly. The 5/16-18 UNC thread size is common in wood-to-wood and wood-to-metal connections where a flush, smooth head profile is needed on the bearing surface. The galvanized zinc-plated finish adds a layer of protection suitable for outdoor or semi-exposed installations. These bolts are sold in multiples of 100, making them practical for contractors and maintenance crews who need consistent fastener stock on the job site.

Key Features

• 5/16-18 UNC thread provides reliable engagement in standard tapped holes and nuts
• Square neck locks into substrate to prevent spinning during installation
• Fully threaded shank allows maximum thread engagement along the full 1-1/4 inch length
• Galvanized zinc-plated finish offers corrosion resistance for outdoor and semi-exposed use
• Conforms to ASME B18.5 fastener standard for dimensional accuracy
• Grade 1006-1050 steel construction balances formability and tensile strength

Compatibility

Designed as a standard ASME B18.5 inch-series carriage bolt compatible with 5/16-18 UNC nuts and standard clearance holes in wood, composite, and light metal assemblies.

Installation Notes

Installation is typically performed by carpenters, ironworkers, or general contractors using standard wrenches or sockets on the mating nut. The square neck must seat fully into the substrate before torquing the nut to prevent rotation and ensure proper clamping force. Always pre-drill a clean clearance hole sized to allow the square neck to draw in flush during tightening. Follow applicable building codes and structural fastener guidelines for load-bearing connections.