Value Collection 121810 Hex Cap Screw 7/8-9 Grade 8 25 Pack

Product Description

The VALUE COLLECTION 121810 is a Grade 8 steel hex head cap screw with a 7/8-9 UNC thread and a 3-1/4-inch length under head. Partially threaded and left with a bright, uncoated finish, this fastener is built for high-strength bolted connections in structural, mechanical, and industrial applications. It meets ASME B18.2.1 and SAE J429 standards, confirming dimensional and mechanical property compliance. Sold in a package of 25, it suits job-site and shop use where a reliable supply of heavy-duty inch-series fasteners is needed. Installation requires standard hex tooling and is suited to skilled tradespeople working in fabrication, construction, or maintenance environments.

This screw is appropriate for heavy-duty fastening tasks where high clamping force and tensile strength are required. The 7/8-9 coarse thread (UNC) engages efficiently in steel and cast components, making it a common choice for structural steel assembly, equipment mounting, and machine bolting. The partial threading allows the unthreaded shank to bear shear loads in close-tolerance holes, which is typical in structural and mechanical connections. Packaged in quantities of 25, it is well suited for both single-job use and ongoing shop inventory.

Key Features

• Grade 8 steel construction for high tensile and proof-load strength
• 7/8-9 UNC coarse thread for reliable engagement in steel and cast materials
• Partially threaded shank supports shear-load applications in close-tolerance holes
• Bright, uncoated finish — suitable for dry or controlled environments
• Meets ASME B18.2.1 and SAE J429 dimensional and mechanical standards
• Packaged in 25-piece quantities for convenient inventory management

Compatibility

Designed as a standard inch-series Grade 8 hex head cap screw for use wherever 7/8-9 UNC fasteners are specified in structural steel, heavy equipment, and general industrial bolted connections.

Installation Notes

Installation should be performed by qualified tradespeople or maintenance personnel familiar with torque requirements for Grade 8 fasteners. Always consult the applicable engineering specification or torque table for the specific joint design — do not rely on general estimates for critical structural connections. Use properly rated hex wrenches, impact sockets, or torque wrenches appropriate for 7/8-inch drive. Inspect mating threads and bearing surfaces for damage before assembly.