Value Collection HCI31000475N-001BX Hex Head Bolt A325

Product Description

The VALUE COLLECTION HCI31000475N-001BX is a heavy-hex structural bolt designed for high-strength bolted connections in steel fabrication and construction applications. It features a 1-8 UNC thread with a 4-3/4 inch length under head and is manufactured from uncoated steel to ASTM A325 specifications. The partial threading leaves a smooth shank section, which improves shear performance in structural joints. This bolt is installed by ironworkers, structural steel contractors, and millwrights working on building frames, bridges, machinery bases, and similar load-bearing assemblies where Grade A325 compliance is required by specification.

This bolt is suited for structural steel connections in both commercial and industrial construction where ASTM A325 material certification is mandated. Common applications include beam-to-column connections, base plate anchoring, equipment mounting, and heavy fabrication work. The 1-inch diameter and 4-3/4 inch length under head make it appropriate for multi-layer steel stack-ups requiring a full bearing grip length. The uncoated bright finish is standard for interior structural steel or applications where a field-applied coating will be used after assembly.

Key Features

• ASTM A325 certified high-strength structural steel bolt
• 1-8 UNC thread form for compatibility with standard heavy-hex nuts
• Partially threaded shank improves shear resistance in bearing-type connections
• 4-3/4 inch length under head suits multi-ply structural steel assemblies
• Uncoated bright finish allows post-installation field coating or galvanizing
• Inch measurement system for use with standard imperial hardware

Compatibility

Designed for use with standard 1-inch heavy-hex nuts and hardened washers meeting ASTM A563 and F436 specifications, as required by AISC and RCSC standards for A325 bolted connections.

Installation Notes

Installation should be performed by qualified ironworkers or structural steel erectors following RCSC Specification for Structural Joints guidelines. Snug-tighten all bolts in the connection before applying final pretension using a calibrated torque wrench, direct tension indicator, or turn-of-nut method as required by the project specification. Inspect threads and bearing surfaces for damage before installation. Do not use impact tools that have not been calibrated for the specified pretension level.