Value Collection 216377MSC Carriage Bolt 1/2-13 8 in Grade 8

Product Description

The VALUE COLLECTION 216377MSC is a Grade 8 alloy steel carriage bolt designed for high-strength fastening applications. It features a 1/2-13 UNC thread and a full 8-inch length under head, making it well suited for structural connections that demand a smooth, flush bearing surface. The square neck locks the bolt against rotation when drawn through wood or soft material, eliminating the need for a wrench on the bolt head. A zinc trivalent chromate finish provides corrosion resistance. This bolt meets SAE J429 standards and is fully threaded along its entire 8-inch shank. Licensed tradespeople and maintenance professionals install this type of hardware across a wide range of structural and mechanical assemblies.

This carriage bolt is appropriate for use in residential and light commercial construction, equipment mounting, decking, framing connections, and general fabrication work where a Grade 8 tensile rating is required. The fully threaded shank allows maximum thread engagement at any grip length within the bolt's reach. The 1/2-13 UNC thread pattern accepts standard hex nuts and washers stocked at most trade supply counters.

Key Features

• Grade 8 alloy steel construction for high-strength fastening requirements
• 1/2-13 UNC fully threaded shank, 8 inches length under head
• Square neck prevents rotation during installation without a secondary tool on the bolt head
• Zinc trivalent chromate finish for corrosion resistance
• Meets SAE J429 fastener standard
• Smooth domed head provides a clean bearing surface and aesthetic finish

Compatibility

Designed as a standard 1/2-13 UNC carriage bolt compatible with any application requiring a Grade 8 alloy steel fastener at 8 inches length under head per SAE J429 specification.

Installation Notes

Installation is typically performed by carpenters, ironworkers, millwrights, or maintenance mechanics using standard hand or power tools. Always de-energize any adjacent electrical systems and relieve pressure from any connected mechanical systems before working in the fastener area. Drive the square neck firmly into the substrate to seat it before applying torque to the nut. Use a flat washer and properly rated nut on the threaded end and follow applicable structural or mechanical codes for torque and fastener spacing requirements.