Value Collection HCI20310500G-050BX Hex Head Bolt 5/16-18

Product Description

The VALUE COLLECTION HCI20310500G-050BX is a Grade 2 steel hex head bolt with a 5/16-18 UNC thread and a 5-inch length under head. It features a hot-dipped galvanized finish that provides corrosion resistance for outdoor, wet, or corrosive environments. The bolt is partially threaded, which is standard for longer fasteners where a smooth shank is needed for load-bearing or alignment purposes. It meets ASTM A307 standards for general-purpose low-carbon steel fasteners. Tradespeople working in construction, mechanical assembly, HVAC equipment mounting, plumbing, and electrical enclosure installation will find this bolt suitable for a wide range of structural and non-structural applications.

This bolt is used in general construction and trade applications where a corrosion-resistant, medium-strength fastener is required. The hot-dipped galvanized coating makes it appropriate for exterior installations, pressure-treated lumber connections, and light industrial environments. The 5/16-18 UNC thread size is commonly found in equipment mounting hardware, framing connectors, and utility brackets across HVAC, plumbing, and electrical trades.

Key Features

• 5/16-18 UNC thread for compatibility with standard inch-system nuts and tapped holes
• 5-inch length under head suits deeper assemblies and through-bolt applications
• Hot-dipped galvanized finish provides durable corrosion protection
• Partially threaded shank supports proper clamping force in thick material stacks
• Meets ASTM A307 standard for low-carbon steel hex bolts
• Grade 2 steel is suitable for general-purpose, non-critical structural connections

Compatibility

Designed as a general-purpose inch-series hex head bolt for use with 5/16-18 UNC nuts, washers, and tapped components in standard construction and trade applications.

Installation Notes

Install using a standard hex wrench or socket driver sized for the bolt head. Always use a properly rated nut and washer matched to the 5/16-18 thread. Power down or de-energize any equipment before fastening hardware to live electrical or mechanical assemblies. Follow applicable building codes, NEC guidelines for electrical enclosures, or IFGC requirements when using fasteners in mechanical system installations.