Value Collection 489124PS Carriage Bolt 1/2-13 5-1/2 in Square Neck

Product Description

The VALUE COLLECTION 489124PS is a Grade 2 steel carriage bolt with a 1/2-13 UNC thread and a 5-1/2 inch length under the head. The domed, unslotted head and square neck work together to resist rotation as the nut is driven from the opposite side, eliminating the need for a tool on the bolt end. The zinc plating provides a baseline level of corrosion resistance suited to general indoor and light outdoor applications. This bolt conforms to ASTM A307 standards and is a staple fastener for structural assembly, framing, and equipment mounting tasks performed by carpenters, ironworkers, and general contractors.

This carriage bolt is used in a wide range of construction, woodworking, and light structural applications where a smooth, finished head face is required on the show side of the assembly. Typical installations include timber framing connections, deck ledger attachments, equipment frames, and bracket mounting to wood or mild steel members. It is sold with a minimum order quantity of 25 pieces, making it appropriate for job-site procurement and maintenance shop stocking.

Key Features

• 1/2-13 UNC thread for broad nut and hardware compatibility
• 5-1/2 inch length under head accommodates thicker material stacks
• Square neck locks into wood substrate to prevent spinning during installation
• Zinc-plated finish provides corrosion resistance for general-duty use
• Grade 2 steel meets ASTM A307 fastener standard
• Smooth domed head delivers a clean appearance on exposed face

Compatibility

Designed as a standard inch-series carriage bolt for use with 1/2-13 UNC hex nuts and washers in wood-to-wood and wood-to-metal structural connections.

Installation Notes

Installation is performed by driving the bolt through a pre-drilled hole sized to allow the square neck to seat flush into the material, preventing rotation. A wrench or impact driver is used on the nut side only. Verify hole diameter matches the bolt shank to ensure proper neck engagement. Follow applicable building codes and structural specifications when using fasteners in load-bearing connections.