Value Collection CAI503100620-100BX Carriage Bolt 5/16-18 5/8 in

Product Description

The VALUE COLLECTION CAI503100620-100BX is a Grade 5 steel carriage bolt with a 5/16-18 UNC thread and a 5/8-inch length under the head. It features a square neck that seats flush into the material upon installation, preventing the bolt from spinning during nut tightening. A zinc-plated finish provides basic corrosion resistance suitable for general indoor and light-duty outdoor fastening applications. This box contains 100 bolts, making it well-suited for production assembly, maintenance shops, and job-site fastening tasks where consistent hardware supply is needed. Licensed trades including electricians, HVAC technicians, and plumbers regularly use carriage bolts for panel mounting, equipment strapping, and structural connections.

This carriage bolt is used across a wide range of light-duty to medium-duty fastening applications in residential and commercial construction and maintenance. Common uses include securing wood-to-wood and wood-to-metal connections in equipment bases, support frames, and structural brackets. The 5/16-18 UNC thread is a standard inch-series coarse thread widely compatible with 5/16-inch hex nuts and washers. The 100-piece minimum order quantity makes this an efficient stock item for contractors and facilities maintenance teams.

Key Features

• 5/16-18 UNC coarse thread for broad compatibility with standard inch-series hardware
• 5/8-inch length under head for compact fastening in tight clearance applications
• Square neck design locks into material to prevent rotation during installation
• Grade 5 steel construction provides reliable tensile and shear strength for general fastening
• Zinc-plated finish offers basic corrosion resistance for indoor and light-duty environments
• Sold in a 100-piece box for efficient job-site and shop inventory management

Compatibility

Designed for use with standard 5/16-inch inch-series hex nuts and flat washers in general-purpose wood and metal fastening applications following inch UNC thread standards.

Installation Notes

Carriage bolts are typically installed by driving the square neck flush into the mating material so rotation is prevented, then threading a nut and washer from the opposite side. Always drill a properly sized pilot hole to avoid splitting wood substrates or deforming metal panels. Power down and de-energize any electrical equipment before fastening hardware near live components. Follow applicable structural and mechanical codes for torque and joint requirements on load-bearing connections.