Value Collection 215117MSC Carriage Bolt 1/4-20 1-3/4 in Grade 8

Product Description

The VALUE COLLECTION 215117MSC is a Grade 8 alloy steel carriage bolt designed for high-strength fastening applications. With a 1/4-20 UNC thread and a 1-3/4 inch length under head, this fully threaded bolt features a square neck that locks into the mating material to prevent rotation during installation. The zinc trivalent chromate finish provides corrosion resistance and meets SAE J429 standards. This bolt is a standard inch-measurement fastener suited for structural assemblies, equipment fabrication, and general mechanical work performed by maintenance technicians, millwrights, and trade professionals.

This carriage bolt is appropriate for use in both light and heavy-duty structural connections where a flush, round-head fastener profile is required. The fully threaded shank allows engagement along the entire length, making it well suited for thinner material stacks. The Grade 8 alloy steel construction provides higher tensile strength compared to lower-grade fasteners, making it a preferred choice in load-bearing and vibration-prone assemblies. Sold in multiples of 10 per order with a package quantity of 1.

Key Features

• Grade 8 alloy steel construction for high tensile strength in demanding applications
• Fully threaded 1/4-20 UNC shank along the full 1-3/4 inch length under head
• Square neck design prevents bolt rotation during nut tightening without a wrench on the head
• Zinc trivalent chromate finish provides corrosion resistance
• Conforms to SAE J429 fastener standard
• Inch measurement system; length measured under head

Compatibility

Designed as a standard 1/4-20 UNC carriage bolt for use in structural panels, wood-to-metal connections, and general fabrication assemblies where a Grade 8 alloy steel fastener and SAE J429 compliance are required.

Installation Notes

Installation is typically performed by maintenance technicians, millwrights, or general tradespeople using standard hand tools. Pull the bolt head flush into the mating surface so the square neck seats fully and prevents rotation before applying the nut. Ensure the receiving material is capable of accepting a Grade 8 load before torquing. Follow applicable structural or equipment manufacturer specifications for final torque values.