Value Collection HCI31250425N-005BX Hex Head Bolt A325

Product Description

The VALUE COLLECTION HCI31250425N-005BX is a heavy hex head bolt manufactured from Grade A325 steel with a bright uncoated finish. It features a 1-1/4-7 UNC thread and measures 4-1/4 inches in length under the head. The bolt is partially threaded, conforming to ASTM A325 structural fastener standards. It weighs approximately 1 pound. This fastener is intended for structural steel connections and heavy-duty mechanical assemblies where high-strength bolting is required. Installation is performed by qualified tradespeople including ironworkers, structural welders, and mechanical contractors.

This bolt is suited for structural steel framing, connection plates, and heavy mechanical assemblies in both commercial and industrial applications. Its ASTM A325 rating makes it appropriate for high-strength structural joints where load-bearing performance is critical. The partially threaded shank provides a bearing surface in the grip length zone, which is typical in bolted structural connections requiring precise shear transfer.

Key Features

• Grade A325 steel construction meets ASTM A325 structural fastener standard
• 1-1/4-7 UNC thread for compatibility with standard heavy hex nuts
• 4-1/4 inch length under head for adequate grip in thick structural members
• Partially threaded shank provides shear-bearing surface in the grip zone
• Bright uncoated finish — suitable for interior structural use or field-coating applications

Compatibility

Designed as an ASTM A325 high-strength structural bolt for use with standard 1-1/4 inch heavy hex nuts and hardened washers in structural steel connections per applicable building codes.

Installation Notes

Installation should be performed by qualified ironworkers or structural mechanics familiar with AISC and RCSC bolted connection specifications. Verify proper hole clearance and use hardened washers as required by the connection design. Tighten using the snug-tight or pretensioned method as specified by the engineer of record. Do not reuse structural bolts that have been fully pretensioned unless permitted by the project engineer.