Value Collection 32163 Carriage Bolt 5/16-18 6 in Grade 5

Product Description

The VALUE COLLECTION 32163 is a 5/16-18 UNC carriage bolt designed for general fastening applications where a smooth, rounded head and anti-rotation square neck are required. Manufactured from Grade 5 steel with a zinc-plated finish, this bolt resists corrosion while providing reliable tensile strength for structural and mechanical assemblies. The 6-inch length under head accommodates thicker material stacks without sacrificing thread engagement. Sold in a pack of 100, this bolt is a standard inventory item for contractors, fabricators, and maintenance crews who work through hardware at volume.

Carriage bolts of this type are used across residential and light commercial construction, metal fabrication, wood framing connections, equipment mounting, and general structural assembly. The square neck seats into a pre-drilled square hole or pulls flush into wood, preventing rotation while the nut is tightened from the opposite side. This makes them especially practical in situations where only one-sided tool access is available.

Key Features

• 5/16-18 UNC thread size for broad compatibility with standard nuts and hardware
• 6-inch length under head suits thick material stacks and multi-layer assemblies
• Grade 5 steel construction delivers solid tensile and proof load ratings for structural use
• Zinc-plated finish provides corrosion resistance in typical indoor and sheltered outdoor environments
• Square neck design prevents bolt rotation during installation without requiring front-side tool access
• 100-piece pack quantity supports bulk jobsite or shop inventory needs

Compatibility

Designed as a standard 5/16-18 UNC carriage bolt suitable for use with any matching 5/16-18 hex nut, lock nut, or coupling nut in inch-measurement fastening applications.

Installation Notes

Installation is typically performed by carpenters, ironworkers, general contractors, or maintenance technicians using standard wrenches or sockets. Always drill a properly sized hole so the square neck seats flush and locks without spinning. Tighten the nut from the back side only; do not attempt to hold the bolt head with pliers, as this can damage the finish and reduce corrosion resistance. For outdoor or moisture-exposed applications, evaluate whether additional corrosion protection beyond zinc plating is required by the project specification or local code.