Value Collection C703065 Hex Head Cap Screw 5/16-24 Grade 8

Product Description

The VALUE COLLECTION C703065 is a Grade 8 steel hex head cap screw with a 5/16-24 UNF thread and a 1-3/4 inch length under head. It is partially threaded and shipped uncoated, meeting the ASME B18.2.1 dimensional standard for inch-series hex cap screws. Grade 8 fasteners are manufactured to higher tensile and proof-load requirements than Grade 5 or Grade 2 hardware, making them appropriate for structural, mechanical, and high-stress assemblies. Licensed tradespeople, maintenance mechanics, and fabricators use this screw where a fine-thread, high-strength hex fastener is required.

This screw is suited for use in mechanical assemblies, equipment frames, brackets, and structural connections that require fine-thread engagement and elevated clamp load. The 5/16-24 UNF thread pitch provides tighter thread spacing compared to UNC, which improves holding strength in thin-walled or hard materials. Applications span HVAC equipment mounting, electrical panel and enclosure hardware, plumbing system supports, and general industrial maintenance. The 100-piece package quantity supports job-site and shop inventory needs for recurring fastener use.

Key Features

• Grade 8 steel construction meets higher tensile strength requirements compared to Grade 5 hardware
• 5/16-24 UNF fine thread for improved holding strength in hard or thin materials
• 1-3/4 inch length under head, partially threaded shank
• Uncoated finish — bare steel, no plating or coating applied
• Conforms to ASME B18.2.1 dimensional standard for hex cap screws
• Sold in 100-piece package quantity

Compatibility

Designed as an inch-series UNF hex head cap screw for use in any application requiring a 5/16-24 Grade 8 fastener per ASME B18.2.1.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson familiar with proper fastener torque procedures for Grade 8 hardware. Use a calibrated torque wrench and apply the torque specification required by the equipment manufacturer or applicable code for the assembly. Avoid impact driving, which can induce stress concentrations or alter the fastener's mechanical properties. Inspect threads for damage before installation and ensure the mating nut or tapped hole is rated for UNF thread engagement.