Value Collection 3GBC904C0108 Carriage Bolt 1/4-20 1-1/2 in

Product Description

The VALUE COLLECTION 3GBC904C0108 is a fully threaded carriage bolt designed for general fastening applications in wood, metal, and structural assemblies. Sized at 1/4-20 UNC thread with a 1-1/2 inch length under head, this bolt features a square neck that locks into pre-drilled square or round holes to prevent spinning during installation. Manufactured from Grade 1006-1050 steel with a galvanized zinc-plated finish, it provides corrosion resistance suitable for both indoor and outdoor use. The bolt conforms to ASME B18.5 standards and is measured by length under head per standard fastener convention. Installers and maintenance technicians working across construction, HVAC equipment mounting, and general mechanical assemblies will find this a reliable, code-conforming choice.

This carriage bolt is suited for light to medium structural fastening tasks including wood-to-wood connections, metal bracket mounting, equipment frames, and utility panel assemblies. Its galvanized zinc-plated finish makes it appropriate for installations where mild moisture exposure is expected. The 1/4-20 UNC thread is one of the most common thread standards in the inch fastener system, making it compatible with a wide range of standard nuts and hardware. It is sold in minimum order quantities of 100 pieces, making it practical for contractors, maintenance shops, and facilities teams stocking hardware for ongoing work.

Key Features

• 1/4-20 UNC fully threaded profile for consistent thread engagement along the full shank length
• 1-1/2 inch length under head for standard through-fastening applications
• Square neck design prevents rotation during tightening without requiring a wrench on the bolt head
• Grade 1006-1050 steel construction provides reliable tensile strength for general-duty fastening
• Galvanized zinc-plated finish for corrosion resistance in mild-exposure environments
• Conforms to ASME B18.5 fastener standard for dimensional consistency

Compatibility

Designed as a standard 1/4-20 UNC inch-series carriage bolt conforming to ASME B18.5, compatible with standard 1/4-20 hex nuts, wing nuts, and washers used in general construction and mechanical fastening applications.

Installation Notes

Carriage bolts are typically installed by tradespeople, maintenance technicians, and contractors using standard hand tools. Insert the bolt through a pre-drilled hole so the square neck seats firmly into the material and prevents rotation, then thread a nut from the opposite side and tighten with a wrench or socket. No wrench is needed on the bolt head once the neck is properly seated. Always ensure the mating hole is sized correctly for the square neck to engage and that hardware is torqued to the requirements of the specific application or applicable structural code.