Value Collection 489118PS Carriage Bolt 1/2-13 3 in Square Neck

Product Description

The VALUE COLLECTION 489118PS is a 1/2-13 carriage bolt with a 3-inch length under head, designed for general-purpose fastening applications in wood, metal, and structural assemblies. Built to ASTM A307 standards from Grade 2 steel with a zinc-plated finish, this bolt provides corrosion resistance suitable for interior and light exterior use. The square neck below the domed head locks into pre-drilled square holes or bites into wood, preventing the bolt from spinning during installation. Tradespeople and contractors use this fastener when a flush, tool-free head is required on the accessible side of the joint.

This carriage bolt is suited for residential and light commercial construction, framing, deck building, equipment mounting, and general structural connections. The 1/2-13 UNC thread is a common size found across wood-to-wood and wood-to-metal connections in fence panels, playground equipment, machinery guards, and utility structures. The zinc coating helps resist rust in dry to moderately humid environments.

Key Features

• 1/2-13 UNC thread size for broad fastener compatibility
• 3-inch length under head suits medium-depth structural connections
• Square neck prevents rotation during nut tightening without a secondary tool on the bolt head
• Grade 2 steel construction meets ASTM A307 fastener standards
• Zinc-plated finish provides corrosion resistance for interior and light exterior applications

Compatibility

Designed as a standard UNC 1/2-13 carriage bolt for use with any compatible 1/2-13 hex nut and flat or fender washer in general structural and construction fastening applications.

Installation Notes

Installation requires a pre-drilled hole sized to allow the square neck to seat flush and resist rotation as the nut is driven from the opposite side. A standard open-end or socket wrench is used to tighten the mating nut. Follow applicable building codes, including local structural fastener requirements, when used in load-bearing assemblies. Minimum order quantity is 50 units per order.