Value Collection 489033PS Carriage Bolt 1/4-20 4.5 in

Product Description

The VALUE COLLECTION 489033PS is a 1/4-20 UNC carriage bolt with a 4.5-inch length under head and a square neck profile. Made from Grade 2 steel with a zinc-plated finish, this bolt is designed to resist corrosion in general-purpose fastening applications. The square neck seats into a pre-drilled hole to prevent rotation during tightening, allowing the nut to be driven from one side without holding the bolt head. It meets ASTM A307 standards and suits a wide range of structural and light mechanical assemblies. This type of fastener is commonly installed by contractors, maintenance technicians, and trade professionals working on wood, metal, or composite structures.

This carriage bolt is suited for residential and light commercial construction, woodworking assemblies, fence and deck framing, and general equipment mounting. The 1/4-20 UNC thread pattern is one of the most common fractional thread sizes in inch-standard fastening, making compatible nuts and washers widely available. The zinc coating provides a baseline level of corrosion resistance appropriate for dry or semi-protected interior and exterior environments. Sold individually with a minimum order quantity of 100 pieces.

Key Features

• 1/4-20 UNC thread for broad hardware compatibility
• 4.5-inch length under head suits medium-depth through-bolt applications
• Square neck prevents bolt rotation during installation without tool access to the head
• Grade 2 steel construction meets ASTM A307 fastener standards
• Zinc-plated finish provides corrosion resistance for general-purpose use
• Inch measurement system for compatibility with standard fractional tooling

Compatibility

Designed as a general-purpose inch-standard carriage bolt compatible with standard 1/4-20 UNC hex nuts and washers. Suitable for use wherever ASTM A307 Grade 2 fasteners are specified.

Installation Notes

Installation is typically performed by carpenters, ironworkers, or general maintenance technicians. Drill a hole sized to the bolt shank diameter so the square neck seats flush and locks against rotation. Thread a compatible 1/4-20 nut onto the exposed end and tighten to the assembly specification using an appropriate wrench or socket. Do not apply torque to the domed head, as it is not designed for tool engagement.