Value Collection 30986 Carriage Bolt 5/8-11 2-1/2 in Square Neck

Product Description

The VALUE COLLECTION 30986 is a 5/8-11 UNC carriage bolt with a 2-1/2 inch length under head and a square neck shoulder designed to resist rotation during installation. Constructed from Grade 5 steel with a zinc-plated finish, this fastener provides solid mechanical strength and basic corrosion resistance suited for general structural and fabrication applications. The domed head and square neck combination allows single-sided installation with a wrench or socket on the nut side only. Licensed tradespeople and experienced DIYers working on wood-to-metal connections, framing assemblies, and equipment mounting rely on this bolt type for dependable clamping force in moderate-load applications.

This carriage bolt is appropriate for residential and light commercial construction, structural framing, equipment mounting, and general metalworking or fabrication tasks where a 5/8-inch coarse-thread fastener is specified. The zinc plating is suitable for indoor and dry outdoor environments where mild corrosion resistance is adequate. Installation requires a matching 5/8-11 nut and appropriate flat washer. This bolt size is commonly used in deck construction, timber framing connections, and machinery guarding applications.

Key Features

• 5/8-11 UNC thread for compatibility with standard coarse-thread 5/8-inch nuts and hardware
• 2-1/2 inch length under head for use in moderate-thickness material stacks
• Square neck shoulder locks into material surface to prevent bolt rotation during tightening
• Grade 5 steel construction provides mid-range tensile strength for structural fastening
• Zinc-plated finish offers basic corrosion resistance in dry and indoor environments

Compatibility

Designed as a standard UNC carriage bolt for use with 5/8-11 hex nuts, coupling nuts, and washers in wood, composite, or light-gauge metal assemblies where a square-neck anti-rotation fastener is required.

Installation Notes

Installation is typically performed by carpenters, ironworkers, millwrights, or general tradespeople using standard hand tools. Drive the square neck flush into a pre-drilled hole sized to grip the shoulder, then thread on a nut and washer from the opposite side. Do not use an impact driver directly on the dome head, as this can damage the shoulder seating. Follow applicable building codes and structural connection specifications for torque and bearing requirements.