Value Collection C703084 Hex Head Cap Screw 5/16-18 Grade 8

Product Description

The VALUE COLLECTION C703084 is a partially threaded hex head cap screw designed for high-strength fastening applications in structural, mechanical, and industrial assemblies. Manufactured from Grade 8 steel with an uncoated finish, this fastener meets ASME B18.2.1 dimensional standards. The 5/16-18 UNC thread size and 4-1/2 inch length under head make it well suited for through-bolt and clamped joint configurations where a longer grip length is required. Machinists, millwrights, maintenance technicians, and general contractors regularly use Grade 8 hex cap screws where tensile strength demands exceed what lower-grade hardware can provide.

This fastener is appropriate for use in equipment frames, machinery mounts, structural brackets, and similar load-bearing connections in both residential and commercial settings. The partial thread configuration provides a smooth shank section that is beneficial in shear-loaded joints or applications where the bolt passes through clearance holes before engaging a threaded nut or tapped hole. Sold in packages of 25 units per the supplier pack quantity.

Key Features

• Grade 8 steel construction provides high tensile and proof load strength for demanding fastening applications
• Partially threaded design leaves a smooth shank for shear-loaded joints and clearance-hole installations
• 5/16-18 UNC thread form for compatibility with standard inch-series nuts and tapped holes
• 4-1/2 inch length under head accommodates thick material stacks and longer grip lengths
• Uncoated finish suitable for dry indoor environments or when a customer-applied coating is planned
• Conforms to ASME B18.2.1 for dimensional accuracy and interchangeability

Compatibility

Designed as a standard inch-series hex head cap screw for use with 5/16-18 UNC nuts, washers, and tapped holes conforming to ASME thread standards in general mechanical and structural assemblies.

Installation Notes

Installation should be performed by a qualified mechanic, millwright, or maintenance technician familiar with fastener torque requirements for Grade 8 hardware. Always use a calibrated torque wrench and refer to the applicable engineering specification or fastener torque chart for the correct clamp load. Ensure mating threads are clean and free of debris before installation. Do not mix Grade 8 fasteners with lower-grade nuts, as mismatched hardware can compromise joint integrity.