Value Collection 451131BR Hex Head Cap Screw 5/8-18 X 7 in

Product Description

The VALUE COLLECTION 451131BR is a Grade 8 steel hex head cap screw in a 5/8-18 UNF thread size with a 7-inch length under head. It is partially threaded and left uncoated with a bright finish. Grade 8 steel provides high tensile strength for demanding structural and mechanical fastening applications. This screw meets ASME B18.2.1 standards, making it suitable for precision bolted assemblies where dimensional consistency is required. Machinists, millwrights, and maintenance technicians typically install this type of fastener in heavy-duty equipment, jigs, fixtures, and structural connections.

This cap screw is suited for industrial and commercial applications requiring a fine-thread fastener with high load-bearing capacity. The 5/8-18 UNF thread pitch offers finer thread engagement than coarse-thread equivalents, which can be advantageous in applications where vibration resistance or precise preload control is needed. Typical uses include machine frames, heavy equipment assembly, and structural bolting in manufacturing environments.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 5/8-18 UNF fine thread for improved vibration resistance and precise torque control
• 7-inch length under head accommodates thick material stacks and long-reach fastening needs
• Partially threaded shank provides a bearing surface for shear-load applications
• Bright uncoated finish — suitable for use as-is or with additional corrosion protection as required by the application
• Conforms to ASME B18.2.1 for dimensional compliance in precision assemblies

Compatibility

Designed as a standard inch-series hex head cap screw for use with 5/8-18 UNF threaded holes or matching nuts in heavy-duty mechanical and structural assemblies.

Installation Notes

Installation is performed by machinists, millwrights, or maintenance technicians using a 5/16-inch hex key or an appropriate hex-drive socket. Always verify the mating thread is clean and undamaged before installation. Follow applicable torque specifications for Grade 8 fasteners as referenced in your project engineering documentation or applicable standards. De-energize and lock out any equipment before performing fastener installation or removal on live machinery.