Value Collection 219114MSC Carriage Bolt 5/16-18 2-1/2 in Grade 5

Product Description

The VALUE COLLECTION 219114MSC is a 5/16-18 carriage bolt with a 2-1/2 inch length under head, designed for general structural and mechanical fastening applications. Built from Grade 5 steel with a clear zinc chromate finish, this bolt provides solid corrosion resistance and meets SAE J429 standards. The ribbed neck design prevents rotation during installation, allowing the nut to be driven from one side without a wrench holding the bolt head. Threading is partial, with 7/8 inch of thread engagement at the shank end. This fastener is suited for trade and industrial assembly work across construction, HVAC equipment mounting, and fabrication contexts.

This carriage bolt is used in light to medium structural connections where a flush, round head and self-locking neck are required. Typical applications include wood-to-wood, wood-to-metal, and bracket assembly fastening in residential and commercial construction, equipment frames, and utility installations. The UNC thread standard makes it compatible with standard 5/16-18 nuts and threaded hardware widely used across trades.

Key Features

• Grade 5 steel construction meets SAE J429 strength requirements
• Ribbed neck prevents bolt rotation during nut installation without holding the head
• Clear zinc chromate finish provides corrosion protection in typical indoor and sheltered environments
• Partially threaded shank with 7/8 inch thread length for controlled engagement
• 5/16-18 UNC thread standard ensures compatibility with common nuts and hardware
• 2-1/2 inch length under head suits a range of material stack thicknesses

Compatibility

Designed for use with standard 5/16-18 UNC nuts and washers in wood, metal, and composite assemblies where a carriage bolt profile is specified.

Installation Notes

Installation typically requires a standard socket or wrench to drive the nut while the ribbed neck seats into the substrate and prevents head rotation. For wood applications, pre-drilling a clearance hole to the bolt diameter is standard practice. Power down or de-energize any equipment being fastened before beginning work. Follow applicable structural or mechanical codes for torque and fastener spacing requirements on your project.