Value Collection 242362 Carriage Bolt 5/16-18 4 in Square Neck

Product Description

The VALUE COLLECTION 242362 is a 5/16-18 carriage bolt with a 4-inch length under head, designed for secure fastening in structural and general-purpose applications. Manufactured from Grade 18-8 stainless steel with an uncoated finish, this bolt offers reliable corrosion resistance in environments where moisture or chemical exposure is a concern. The square neck below the domed head locks into wood or soft material to prevent rotation during installation, eliminating the need for a wrench on the bolt head. This fastener is sold individually but requires a minimum order quantity of 25 units.

This carriage bolt is suited for residential and light commercial construction, woodworking, dock and deck assembly, and general mechanical fabrication. The UNC (Unified National Coarse) thread standard ensures broad compatibility with standard nuts and hardware. It is commonly installed by carpenters, millwrights, maintenance technicians, and general contractors working with timber framing, equipment mounting, and structural connections.

Key Features

• Grade 18-8 stainless steel construction for corrosion resistance in wet or outdoor environments
• 5/16-18 UNC thread for compatibility with standard coarse-thread nuts and hardware
• Square neck design prevents bolt rotation during nut tightening without needing a tool on the head
• 4-inch length under head accommodates thicker material stacks and structural assemblies
• Uncoated finish preserves natural stainless steel properties without added plating

Compatibility

Designed as a standard UNC carriage bolt compatible with 5/16-18 coarse-thread nuts, washers, and standard hardware meeting inch-system fastener specifications.

Installation Notes

Installation requires drilling a clean through-hole sized to allow the square neck to seat flush and resist turning. A standard wrench or socket is used to tighten the nut from the opposite side while the domed head bears against the surface. Power down or de-energize any adjacent electrical systems before working in confined or mixed-trade installations. Follow applicable building codes and load specifications when using carriage bolts in structural connections.