Value Collection HCI20310175G-100BX Hex Head Bolt 5/16-18

Product Description

The VALUE COLLECTION HCI20310175G-100BX is a 5/16-18 UNC hex head bolt with a 1-3/4 inch length under the head, manufactured from Grade 2 steel with a hot-dipped galvanized finish. Partially threaded along the shank, this bolt is produced to ASTM A307 standards, making it suitable for general-purpose structural and mechanical fastening applications. The galvanized coating provides corrosion resistance for installations where moisture exposure is a concern. This box quantity of 100 is sized for job-site stocking or contractor purchasing. Plumbers, electricians, HVAC technicians, and general tradespeople commonly use this bolt type when securing brackets, flanges, and equipment supports.

This bolt is appropriate for light to moderate-duty fastening in residential and commercial settings. The partially threaded shank allows for a clean bearing surface in bolted connections where the shank passes through a clearance hole before threading into a nut or tapped member. Common applications include equipment mounting, pipe hanger assemblies, ductwork supports, and general structural connections where a 5/16-18 UNC fastener is specified. The hot-dipped galvanized finish makes it suitable for use in damp or outdoor-adjacent environments.

Key Features

• 5/16-18 UNC thread size with 1-3/4 inch length under head
• Grade 2 steel construction meets ASTM A307 fastener standard
• Hot-dipped galvanized finish for corrosion resistance in wet or outdoor-adjacent environments
• Partially threaded shank for proper bearing and clamping in through-bolt applications
• Sold in a box of 100 for job-site and shop stocking convenience
• Inch system of measurement; standard hex head drive

Compatibility

Designed as a general-purpose hex head bolt compatible with standard 5/16-18 UNC nuts, tapped holes, and clearance-hole assemblies where ASTM A307 Grade 2 fasteners are specified.

Installation Notes

Installation is performed by general tradespeople and contractors using standard hex wrenches or sockets. Always ensure the mating nut or tapped hole matches the 5/16-18 UNC thread specification before installation. Power down or de-energize any equipment before fastening components in electrical or HVAC assemblies. Follow applicable local building codes and manufacturer torque specifications for the assembly being fastened.