Value Collection HCI31000425N-005BX Hex Head Bolt Grade A325

Product Description

The VALUE COLLECTION HCI31000425N-005BX is a hex head bolt engineered for structural and heavy-duty mechanical fastening applications. It carries a 1-8 UNC thread size with a 4-1/4 inch length under head and is partially threaded along the shank. Manufactured from steel to ASTM A325 specification, this bolt delivers the tensile strength required for steel-to-steel connections in structural assemblies. The uncoated bright finish leaves the fastener in its natural state, suited for dry or controlled environments. Installation crews and contractors working on structural steel framing or heavy equipment will find this bolt meets specification without modification.

This bolt is used in structural steel connections and heavy mechanical assemblies where ASTM A325 compliance is required. Typical applications include beam-to-column connections, steel plate connections, and high-strength bolted joints in both commercial and industrial construction. The partially threaded shank allows the unthreaded grip section to bear shear loads without thread engagement in the bearing zone, which is a common requirement in structural connection design. A licensed ironworker, millwright, or structural contractor typically installs this fastener per approved engineering drawings.

Key Features

• ASTM A325 structural bolt standard for high-strength steel connections
• 1-8 UNC thread size with partially threaded shank for shear-bearing applications
• 4-1/4 inch length under head for standard structural grip ranges
• Uncoated bright finish suitable for dry or controlled environments
• Inch system of measurement for compatibility with standard UNC hardware

Compatibility

Designed as an ASTM A325 compliant hex head bolt for use with standard UNC 1-8 threaded nuts and structural bolt assemblies in high-strength steel connection applications.

Installation Notes

Installation should be performed by qualified personnel in accordance with AISC and applicable structural specifications. Always verify bolt, nut, and washer assembly combinations meet the joint design requirements before installation. Tighten to the specified pretension using a calibrated torque wrench or tension-control method per the project engineer of record. De-energize and lock out any adjacent electrical or mechanical systems before working on connected structural assemblies.