Value Collection 217257MSC Carriage Bolt 5/8-11 5 in Grade 8

Product Description

The VALUE COLLECTION 217257MSC is a Grade 8 alloy steel carriage bolt designed for high-strength fastening applications. It features a 5/8-11 UNC thread with a 5-inch length under head and is fully threaded from end to end. The square neck beneath the round head locks into wood or metal to prevent rotation during tightening. A clear zinc chromate finish provides baseline corrosion resistance. This bolt meets SAE J429 standards and is suited for structural assemblies, heavy equipment, and similar load-bearing connections where a Grade 8 tensile rating is required.

This carriage bolt is used in applications that demand high clamping force and a smooth, low-profile head. Typical install scenarios include timber framing, trailer and truck body construction, agricultural equipment, and heavy fabrication work. The fully threaded 5-inch shank allows full thread engagement across a range of material thicknesses. It is installed by tradespeople and mechanical technicians working in construction, manufacturing, and equipment maintenance.

Key Features

• Grade 8 alloy steel construction for high tensile and shear strength
• 5/8-11 UNC fully threaded shank, 5 inches length under head
• Square neck prevents bolt rotation during nut tightening without a wrench on the head
• Clear zinc chromate finish for corrosion protection in standard service environments
• Meets SAE J429 fastener standard
• Round domed head provides a clean, low-profile bearing surface

Compatibility

Designed as a standard UNC 5/8-11 carriage bolt for use with 5/8-inch nuts and hardware conforming to SAE J429 specifications in inch-system applications.

Installation Notes

Install using a standard wrench or socket on the mating nut while the square neck seats into the material to resist spin. Ensure the mating surface hole is sized to allow the square neck to seat fully before torquing. Follow applicable structural or mechanical codes for Grade 8 fastener torque specifications and joint requirements. Inspect threads and coating for damage before installation.