Value Collection 218198MSC Carriage Bolt 3/4-10 3-1/2 in Grade 8

Product Description

The VALUE COLLECTION 218198MSC is a Grade 8 alloy steel carriage bolt designed for high-strength fastening applications in structural, mechanical, and industrial assemblies. With a 3/4-10 UNC thread and a 3-1/2 inch length under head, this bolt provides the clamping force and tensile strength that heavy-duty connections demand. The square neck beneath the domed head locks into wood or soft materials to prevent rotation during installation, eliminating the need for a wrench on the bolt end. Fully threaded along its entire shank, it offers maximum thread engagement across a range of material thicknesses. The bright, uncoated finish meets SAE J429 standards.

This carriage bolt is suited for residential and commercial construction, timber framing, equipment fabrication, and general industrial fastening where a Grade 8 strength rating is specified. Typical applications include structural wood connections, machinery mounting, and anchor bolt assemblies where a flush, rounded head profile is required on the visible face of the joint.

Key Features

• Grade 8 alloy steel construction for high tensile and shear strength
• 3/4-10 UNC fully threaded shank for maximum thread engagement
• 3-1/2 inch length under head accommodates a range of material stack thicknesses
• Square neck prevents bolt rotation during nut tightening without a secondary wrench
• Bright, uncoated finish per SAE J429 fastener standard
• Dome head provides a smooth, flush appearance on the bolt face

Compatibility

Designed as a standard 3/4-10 UNC carriage bolt for use wherever SAE J429 Grade 8 fasteners are specified in structural, timber, or industrial assemblies.

Installation Notes

Installation is performed by tradespeople including carpenters, ironworkers, and millwrights using standard hand or impact tools. Power down or de-energize any associated equipment before fastening in mechanical assemblies. The square neck must seat fully into the mating material before torquing the nut to prevent bolt spin and thread damage. Follow applicable structural or mechanical codes for torque requirements based on joint type and load specification.