Value Collection 219104MSC Carriage Bolt 5/16-18 2 in

Product Description

The VALUE COLLECTION 219104MSC is a 5/16-18 UNC carriage bolt with a ribbed neck and a 2-inch length under head. Manufactured from Grade 5 steel with a clear zinc chromate finish, this fastener is partially threaded with a 7/8-inch thread length. The ribbed neck design locks into square holes in wood or thin-gauge metal, preventing rotation during nut installation. This bolt meets SAE J429 standards, making it a reliable choice for structural and general mechanical assembly applications across multiple trades.

This carriage bolt is suited for residential and light commercial construction, equipment assembly, and general fabrication work. The ribbed neck style is commonly used when fastening wood components, sheet metal, or composite panels where a flush, round-head profile is required and a wrench-free installation is preferred. Carpenters, millwrights, HVAC equipment installers, and general contractors use this fastener type in framing, bracket mounting, and structural connections.

Key Features

• 5/16-18 UNC thread size with 7/8-inch partial thread length
• Ribbed neck prevents rotation during tightening without a backup wrench
• Grade 5 steel construction for reliable tensile strength in structural applications
• Clear zinc chromate finish provides basic corrosion resistance
• Meets SAE J429 fastener standard
• Inch measurement system, 2-inch length under head

Compatibility

Designed as a standard inch-series carriage bolt for use in wood, sheet metal, and light structural assemblies requiring a 5/16-18 UNC threaded fastener with a round head and ribbed neck profile.

Installation Notes

Installation is performed by driving the bolt through a pre-drilled hole sized to allow the ribbed neck to seat and grip, preventing spin. A standard nut and washer are applied from the opposite side and tightened with a wrench. Always confirm hole diameter matches the bolt shank to ensure proper neck engagement. Follow applicable structural or mechanical codes for torque and fastener spacing requirements.