Value Collection R52001148 Carriage Bolt 5/16-18 Unc

Product Description

The VALUE COLLECTION R52001148 is a 5/16-18 UNC carriage bolt designed for general fastening applications requiring a smooth, rounded head and a square neck that resists rotation during installation. The bolt measures 4 inches in length under the head and is fully threaded along its shank. Constructed from 1006-1050 steel with a galvanized zinc-plated finish, it delivers corrosion resistance suitable for both indoor and outdoor use. This fastener meets ASME B18.5 dimensional standards. It is a practical choice for structural assemblies, wood-to-metal connections, and similar trade fastening tasks where a secure, tamper-resistant head profile is required.

Carriage bolts in this size and thread specification are commonly used in light structural framing, fence and gate assemblies, equipment mounting, and utility construction. The 5/16-18 UNC coarse thread pattern provides strong clamping force in wood and metal substrates. The galvanized zinc-plated finish makes the R52001148 appropriate for applications where mild moisture exposure is a concern. This bolt is suitable for use by contractors, maintenance professionals, and tradespeople working on light commercial or residential projects.

Key Features

• 5/16-18 UNC coarse thread for reliable engagement in wood and metal
• 4-inch length under head provides versatility across a range of material thicknesses
• Fully threaded shank for maximum clamping flexibility
• Standard square neck prevents bolt rotation during nut tightening without requiring a wrench on the head
• Galvanized zinc-plated finish for corrosion resistance in exposed environments
• Meets ASME B18.5 dimensional and performance standards

Compatibility

Designed as a standard ASME B18.5 carriage bolt suitable for use with 5/16-18 UNC hex nuts and washers in typical structural and utility fastening applications.

Installation Notes

Carriage bolts are installed by driving the square neck into a pre-drilled hole so it seats flush and resists turning, then securing with a nut and washer on the opposite side. Use a correctly sized drill bit to ensure the square neck seats properly without over-enlarging the hole. A standard wrench or socket is used to tighten the nut while the head remains stationary. Follow applicable building codes and project specifications for torque and fastener spacing requirements.