Value Collection 218904MSC Carriage Bolt 1/4-20 1-1/2 in

Product Description

The VALUE COLLECTION 218904MSC is a 1/4-20 UNC carriage bolt designed for general fastening applications where a smooth, finished bearing surface and resistance to rotation under load are required. This partially threaded bolt features a ribbed neck that bites into the mating material to prevent spinning during installation without requiring a tool on the bolt head. Manufactured to Grade 5 steel and finished with zinc trivalent chromate, it provides a solid corrosion-resistant fastener for both indoor and outdoor assemblies. Thread length is 0.75 inches. Overall length under head is 1.5 inches.

This carriage bolt is suited for light structural and mechanical assemblies in residential construction, light commercial work, and equipment fabrication. Typical applications include wood-to-wood connections, bracket mounting, and general hardware assembly where a flush or low-profile bolt head is needed. The partially threaded shank allows the unthreaded section to bear load in the joint without thread interference. Installation is straightforward and does not require access to the bolt head once seated.

Key Features

• Ribbed neck resists rotation during nut tightening without a wrench on the bolt head
• Grade 5 steel construction meets SAE J429 strength standards
• Zinc trivalent chromate finish provides corrosion resistance for indoor and outdoor use
• Partially threaded shank with 0.75 inches of thread length
• 1/4-20 UNC thread size for broad compatibility with standard nuts and hardware
• Inch measurement system; length measured under head at 1.5 inches

Compatibility

Designed as a standard 1/4-20 UNC carriage bolt for use with compatible hex nuts, wing nuts, and flat washers in general fastening applications conforming to SAE J429 requirements.

Installation Notes

Installation is typically performed by hand or with a hammer to seat the ribbed neck flush into the mating substrate, followed by tightening the nut with a standard wrench or socket. Ensure the bolt head is fully seated and the ribbed neck is fully engaged before applying final torque to the nut. Follow applicable building codes and structural specifications for load-bearing connections. Minimum order quantity for this SKU is 100 pieces.