Value Collection 219204MSC Carriage Bolt 3/8-16 1 in Ribbed Neck

Product Description

The VALUE COLLECTION 219204MSC is a 3/8-16 partially threaded carriage bolt designed for structural fastening applications requiring a clean, flush bearing surface. The ribbed neck beneath the domed head locks into wood or composite materials to prevent rotation during installation without requiring a wrench on the bolt side. Manufactured from Grade 5 steel with a clear zinc chromate finish for moderate corrosion resistance, this bolt meets SAE J429 standards and carries a 1-inch length under the head with 0.438 inches of thread engagement at the UNC thread standard.

This carriage bolt is suited for residential and light commercial construction, woodworking, fencing, decking, and general structural assembly where a smooth-faced fastener head is required on the finished or visible side of the joint. The partially threaded shank and ribbed neck make it particularly effective in wood-to-wood and wood-to-metal connections where spin-out resistance is critical. A nut and washer are applied from the opposing side to complete the joint.

Key Features

• Ribbed neck design resists bolt rotation without tooling on the head side
• Grade 5 steel construction per SAE J429 for reliable tensile strength
• Clear zinc chromate finish provides moderate corrosion protection
• Partially threaded shank with 0.438 inches of UNC thread length
• 1-inch length under head suits standard structural panel and lumber thicknesses
• Inch measurement system with 3/8-16 UNC thread size for compatibility with standard nuts and hardware

Compatibility

Designed as a standard UNC-threaded carriage bolt for use with 3/8-16 nuts and washers in wood, composite, and light metal fastening applications conforming to SAE J429 specifications.

Installation Notes

Installation is typically performed by carpenters, general contractors, or maintenance tradespeople using a hammer to seat the ribbed neck flush into the substrate, followed by a standard wrench or socket on the nut side. Always drill a correctly sized pilot hole through the mating materials before driving the bolt. Do not over-torque the nut against soft wood substrates, as this may pull the head through the material. Consult applicable building codes for structural fastener requirements specific to your application.