Value Collection C703222 Hex Head Cap Screw 1/2-13 Grade 8

Product Description

The VALUE COLLECTION C703222 is a 1/2-13 x 3-1/4 inch hex head cap screw manufactured from Grade 8 steel with an uncoated finish. It features partial threading along the shank and conforms to ASME B18.2.1 dimensional standards. Grade 8 steel provides high tensile strength, making this fastener appropriate for structural and load-bearing connections in industrial, mechanical, and trade assembly applications. The Unified National Coarse (UNC) thread form is the standard for general-purpose inch-series fasteners. This screw is installed by mechanics, millwrights, pipefitters, and general trade professionals wherever a high-strength hex cap screw is required.

This fastener is suited for heavy-duty bolted connections in machinery frames, equipment mounting, structural steel fabrication, and mechanical assembly. The partially threaded shank provides a bearing surface that resists shear loads in applications where the bolt passes through a clearance hole before engaging the threaded section. It is commonly used in industrial maintenance, construction equipment, and mechanical system assembly where Grade 8 strength is specified by engineering or code requirements.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 1/2-13 UNC thread form for compatibility with standard inch-series nuts and tapped holes
• 3-1/4 inch length measured under the head per ASME B18.2.1
• Partially threaded shank provides shear resistance in clearance-hole applications
• Uncoated finish — suitable for applications where coating is not required or where field finishing will be applied
• Meets ASME B18.2.1 dimensional standard for hex head cap screws

Compatibility

Designed for use with standard 1/2-13 UNC hex nuts, washers, and tapped holes conforming to inch-series thread standards. Suitable as a direct replacement or new-installation fastener wherever a 1/2-13 x 3-1/4 inch Grade 8 hex cap screw is specified.

Installation Notes

Installation is performed by mechanics, millwrights, or trade professionals using a standard hex wrench or impact driver with the appropriate socket. Always use a flat washer under the head and under the nut when fastening into soft or uneven surfaces to distribute clamping load. Torque to the value specified by the equipment manufacturer or structural engineer for Grade 8 fasteners of this diameter — do not substitute a lower-grade fastener for a Grade 8-specified connection. Inspect threads for damage before installation and replace any fastener showing deformation or corrosion.