Value Collection HCI31250550NG-005BX Hex Head Bolt A325

Product Description

The VALUE COLLECTION HCI31250550NG-005BX is a heavy-duty hex head bolt designed for structural and industrial fastening applications. It features a 1-1/4-7 UNC thread size with a 5-1/2 inch length under head, and is partially threaded to allow for secure clamping in bolted connections. Manufactured from steel to ASTM A325 structural bolt standards and finished with a hot-dipped galvanized coating, this bolt provides corrosion resistance suited to exposed or high-moisture environments. It is installed by structural ironworkers, millwrights, and experienced tradespeople working with heavy steel assemblies.

This bolt is commonly used in steel-to-steel structural connections, heavy equipment mounting, bridge construction, and other applications governed by AISC or RCSC bolt specifications. The ASTM A325 grade designation makes it a recognized choice for high-strength structural bolted joints in both commercial and industrial settings. The hot-dipped galvanized finish provides added durability in outdoor or corrosive environments where plain finish fasteners would degrade quickly.

Key Features

• ASTM A325 high-strength structural bolt grade for load-bearing connections
• 1-1/4-7 UNC thread with 5-1/2 inch length under head
• Partially threaded shank for proper grip length in structural joints
• Hot-dipped galvanized finish for corrosion resistance in outdoor or wet environments
• Steel construction meets ASTM A325 fastener standard
• Inch measurement system; compatible with standard UNC hex nuts and washers

Compatibility

Designed as an ASTM A325 structural hex bolt for use with standard UNC 1-1/4-7 heavy hex nuts and structural washers in high-strength bolted connections per applicable structural fastener specifications.

Installation Notes

Installation of ASTM A325 structural bolts should be performed by qualified tradespeople following RCSC Specification for Structural Joints guidelines. Always power down or de-energize adjacent systems before working in confined steel assemblies. Use calibrated torque wrenches or tension-control methods as required by the project specification. Do not reuse structural bolts that have been fully tensioned.