Value Collection HCI31120325N-005BX Hex Head Bolt A325

Product Description

The VALUE COLLECTION HCI31120325N-005BX is a fully threaded hex head bolt designed for structural and heavy-duty fastening applications. It carries a 1-1/8-7 UNC thread size with a 3-1/4 inch length under head, manufactured from steel to ASTM A325 specifications. The bright uncoated finish indicates this fastener has not been plated or treated, making it suitable for use where bare steel or field-applied coatings are specified. ASTM A325 grade fasteners meet defined minimum tensile and proof load requirements, making them a standard choice in structural steel construction and heavy mechanical assemblies. Installation is performed by qualified tradespeople working to applicable structural or mechanical codes.

This bolt is used in structural steel connections, heavy equipment assembly, and industrial fabrication where ASTM A325 compliance is required. Fully threaded construction allows engagement along the entire shank length, offering flexibility in clamping depth. The 1-1/8-7 UNC thread pattern is a coarse unified national thread, compatible with standard hex nuts and washers of the same thread designation. Typical applications include steel-to-steel connections in commercial construction, bridge fabrication, and industrial machinery mounting where high-strength fasteners are specified by engineering drawings or structural codes.

Key Features

• 1-1/8-7 UNC coarse thread for compatibility with standard hex nuts and structural hardware
• 3-1/4 inch length under head for use in moderate-depth structural connections
• Fully threaded shank provides maximum thread engagement along the full bolt length
• ASTM A325 material grade meets structural bolt strength requirements
• Bright uncoated finish suitable for field coating or use per specification

Compatibility

Designed for use with 1-1/8-7 UNC hex nuts and flat washers in structural steel and heavy mechanical fastening applications meeting ASTM A325 specifications.

Installation Notes

Installation of ASTM A325 structural bolts should be performed by qualified ironworkers or mechanics following applicable structural codes such as AISC or RCSC specifications. Power down or de-energize any associated equipment before fastener service in mechanical assemblies. Use properly rated impact wrenches, torque wrenches, or turn-of-nut methods as specified by the project engineer. Do not mix thread standards or substitute lower-grade fasteners in structural connections requiring A325 compliance.