Value Collection 489035PS Carriage Bolt 1/4-20 5-1/2 in Grade 2

Product Description

The VALUE COLLECTION 489035PS is a 1/4-20 carriage bolt designed for general fastening applications in wood, metal, and structural assemblies. It features a smooth domed head with a square neck that locks into the material surface to prevent rotation during tightening, eliminating the need for a secondary wrench on the bolt side. Manufactured from Grade 2 steel with a zinc-plated finish, this bolt measures 5.5 inches in length under the head and conforms to ASTM A307 standards. It is suited for light-to-medium structural connections where corrosion resistance and secure seating are priorities. Typical installers include carpenters, electricians, plumbers, and general contractors working with wood framing, equipment mounting, and utility supports.

This carriage bolt is commonly used in residential and light commercial construction for connecting timber framing members, securing brackets and straps, mounting electrical enclosures to wood backing, and anchoring mechanical equipment supports. The Unified National Coarse (UNC) thread form ensures compatibility with standard 1/4-20 nuts and threaded hardware widely available across the trades. Minimum order quantity is 100 pieces, making this item appropriate for stocking and project-lot purchasing.

Key Features

• Square neck design prevents bolt rotation during nut installation without a secondary tool
• Grade 2 steel construction meets ASTM A307 fastener standards
• Zinc-plated finish provides basic corrosion resistance for indoor and sheltered applications
• 1/4-20 UNC thread is compatible with standard hardware across all trades
• 5.5-inch length under head accommodates thicker material stacks and through-bolt applications
• Inch measurement system; length specified as length under head per ASTM convention

Compatibility

Designed as a standard 1/4-20 UNC carriage bolt for use with any matching 1/4-20 nut and washer hardware. Suitable for wood, composite, and light steel base materials where a round-head, square-neck fastener is specified.

Installation Notes

Installation requires drilling a clearance hole sized to the bolt shank diameter so the square neck seats flush and locks against rotation. Insert the bolt from the face side, seat the square neck fully into the material, then apply a washer and nut from the back side and tighten with a wrench or socket. Do not apply a wrench to the head. Follow applicable building codes and structural specifications for fastener spacing and load requirements.