Value Collection 781276PS Carriage Bolt 5/16-18 6in Ss

Product Description

The VALUE COLLECTION 781276PS is a 5/16-18 carriage bolt with a 6-inch length under head, designed for use in structural and general fastening applications requiring corrosion resistance. The square neck under the domed head locks into place as the bolt is drawn into material, preventing rotation during installation without the need for a secondary tool on the bolt head. Manufactured from 18-8 stainless steel with a bright, uncoated finish, this fastener offers solid resistance to rust, oxidation, and mild chemical exposure. It is sold individually with a minimum order quantity of 10 pieces.

This carriage bolt is suited for wood-to-wood, wood-to-metal, and similar assemblies in both residential and light commercial construction environments. Common applications include deck framing, fence hardware, playground equipment, marine woodwork, and general equipment fabrication where a smooth, rounded head profile is required on the exposed face. The uncoated stainless finish makes it a practical choice for outdoor and wet environments where zinc-plated or hot-dip galvanized fasteners may be specified or substituted based on project requirements.

Key Features

• 5/16-18 UNC thread standard for broad compatibility with standard nuts and hardware
• 6-inch length under head provides deep grip for thick material stacks
• Square neck locks into substrate to prevent bolt rotation during nut tightening
• 18-8 stainless steel construction resists rust and oxidation in outdoor and wet conditions
• Bright, uncoated finish — no coating to chip, flake, or interfere with torque values
• Minimum order quantity of 10 supports job-lot purchasing for field and shop stock

Compatibility

Designed as a standard inch-series carriage bolt compatible with 5/16-18 UNC hex nuts, flat washers, and lock washers conforming to ASME and ANSI inch fastener standards.

Installation Notes

Carriage bolts are typically installed by tradespeople and general contractors using a standard wrench or socket on the nut side only — do not apply a wrench to the domed head. Drive the square neck fully into the substrate before tightening the nut to ensure the bolt is locked against rotation. When installing in stainless steel assemblies, apply an anti-seize compound to the threads to reduce the risk of galling. Follow applicable building codes and structural specifications for fastener spacing and load requirements.