Value Collection C703064 Hex Head Cap Screw 5/16-18 Grade 8

Product Description

The VALUE COLLECTION C703064 is a Grade 8 steel hex head cap screw with a 5/16-18 UNC thread and a 1-3/4 inch length under head. It is partially threaded and left uncoated, making it suitable for applications where a coating is not required or where a secondary finish will be applied after assembly. This fastener meets ASME B18.2.1 dimensional standards. Sold in a package of 100, it is a standard stocking item for maintenance, repair, and fabrication work performed by millwrights, pipefitters, general contractors, and industrial maintenance technicians.

This hex head cap screw is used across a broad range of mechanical and structural assembly applications. The 5/16-18 UNC thread is one of the most common coarse-thread sizes in inch-measurement fastener work, appearing in equipment frames, brackets, panels, and general hardware joints. Grade 8 strength makes it appropriate where higher tensile and proof load requirements apply compared to Grade 2 or Grade 5 hardware. The partial threading is standard for longer-shank fasteners where a plain shank is needed to bear shear loads or locate components.

Key Features

• Grade 8 steel construction for high tensile and proof load requirements
• 5/16-18 UNC coarse thread for broad compatibility with standard inch-measurement hardware
• 1-3/4 inch length under head with partial threading for shear-bearing and component-locating applications
• Uncoated finish suitable for secondary finishing or where coating is not required
• Meets ASME B18.2.1 dimensional standard for hex head cap screws
• Packaged in quantities of 100 to support stocking and bulk fastener needs

Compatibility

Designed as a standard inch-measurement hex head cap screw for use with any 5/16-18 UNC tapped hole or matching nut in general mechanical, structural, and industrial assembly applications.

Installation Notes

Installation is performed with a standard hex wrench, socket, or open-end wrench sized for a 5/16-18 hex head cap screw. Ensure the mating tapped hole or nut matches the 5/16-18 UNC thread specification before assembly. Follow applicable torque guidelines for Grade 8 fasteners as specified by the equipment manufacturer or relevant industry standards. Inspect threads for damage and ensure mating surfaces are clean and free of debris before driving.