Value Collection 215498MSC Carriage Bolt 3/8-16 1-1/2 in Grade 8

Product Description

The VALUE COLLECTION 215498MSC is a Grade 8 alloy steel carriage bolt with a 3/8-16 UNC thread and a 1-1/2 inch length under head. The square neck below the domed head locks into a mating hole in wood or sheet metal, preventing rotation during assembly without requiring a tool on the bolt end. Fully threaded along its entire 1-1/2 inch shank, this fastener delivers consistent clamping force from head to nut. Grade 8 material provides high tensile strength for demanding structural and mechanical applications. The bright uncoated finish meets SAE J429 standards.

This carriage bolt is suited for structural assemblies, equipment mounting, and mechanical connections where high-strength fastening is required. Typical applications include fabrication, machinery frames, brackets, and heavy-duty wood-to-metal connections in both residential and light commercial settings. The 3/8-16 thread size is a common inch-series dimension used across a wide range of industrial and construction fastener applications.

Key Features

• Grade 8 alloy steel construction for high tensile strength
• 3/8-16 UNC fully threaded shank, 1-1/2 inches length under head
• Square neck design prevents rotation during tightening
• Bright uncoated finish — no coating buildup on threads
• Meets SAE J429 fastener standard
• Inch system dimensions for compatibility with standard inch-series hardware

Compatibility

Designed for use with standard 3/8-16 UNC inch-series nuts and hardware in structural, fabrication, and mechanical fastening applications.

Installation Notes

Installation is typically performed by machinists, fabricators, or general contractors depending on the application. Before installation, ensure the through-hole matches the bolt diameter and the square neck recess is properly formed to prevent spinning. A standard wrench or socket is applied to the nut side only — no tool is needed on the bolt head. Always torque to the value specified by your assembly engineer or applicable structural standard for Grade 8 fasteners.