Value Collection HCI20310150G-100BX Hex Head Bolt 5/16-18

Product Description

The VALUE COLLECTION HCI20310150G-100BX is a Grade 2 steel hex head bolt in the 5/16-18 UNC thread size with a 1-1/2 inch length under head. It features a hot-dipped galvanized finish for corrosion resistance and is partially threaded, conforming to ASTM A307 standards. This bolt is a standard inch-system fastener suited for general structural and mechanical assembly work. Electricians, plumbers, HVAC technicians, and general contractors reach for this size regularly when securing equipment, brackets, and enclosures across a wide range of trade applications.

This bolt is used in residential and light commercial construction, mechanical room installations, equipment mounting, and utility bracketing. The 5/16-18 UNC thread pattern is one of the most common coarse-thread sizes in trade work, making this bolt a reliable stock item for service vans, job sites, and shop inventory. The hot-dipped galvanized finish makes it appropriate for mildly corrosive or outdoor-adjacent environments where bare steel would be unsuitable. Sold in a box of 100 to meet minimum order requirements.

Key Features

• 5/16-18 UNC coarse thread for broad compatibility with standard nuts and tapped holes
• 1-1/2 inch length under head for medium-depth fastening applications
• Hot-dipped galvanized finish provides corrosion resistance in damp or outdoor-adjacent environments
• Partially threaded shank reduces thread engagement in clearance holes and provides shear strength
• Grade 2 steel construction meets ASTM A307 standards for general-purpose fastening
• Sold in a box of 100 for job-site and van-stock convenience

Compatibility

Designed as a general-purpose inch-system hex head bolt compatible with standard 5/16-18 UNC nuts, washers, and tapped assemblies used across HVAC, plumbing, electrical, and general mechanical trade applications.

Installation Notes

Install using a standard hex wrench, socket, or nut driver sized for a 5/16-inch hex head bolt. Power down or de-energize any equipment before fastening or loosening hardware in electrical or mechanical enclosures. Do not mix inch-series and metric fasteners in the same assembly. Follow applicable codes and equipment manufacturer torque requirements when securing structural or pressure-bearing connections.