Value Collection HCI31000450N-005BX Hex Head Bolt A325

Product Description

The VALUE COLLECTION HCI31000450N-005BX is a heavy-duty hex head bolt engineered for structural and industrial fastening applications. Manufactured from steel to ASTM A325 material standards, this bolt features a 1-8 UNC thread size and measures 4-1/2 inches in length under the head. It is partially threaded, which provides a smooth shank section suited for bolted connections where shear strength and precise clamping are required. The uncoated, bright finish keeps the surface free from added coating thickness, which is important in applications with tight dimensional tolerances. This fastener is commonly specified by ironworkers, structural erectors, and mechanical contractors working to code-compliant connection details.

This bolt is suited for structural steel connections, machinery assembly, and heavy equipment fabrication where ASTM A325 fasteners are called out by specification. The 1-8 UNC thread pitch is a standard coarse thread, making it compatible with a wide range of standard hex nuts, washers, and structural connection hardware. Typical installation scenarios include beam-to-column connections, base plate anchoring, and steel frame construction where high-strength fasteners are required by engineering drawings or project specifications.

Key Features

• ASTM A325 structural bolt standard for high-strength steel connections
• 1-8 UNC coarse thread for broad compatibility with standard nuts and hardware
• 4-1/2 inch length under head accommodates thicker connection stacks
• Partially threaded shank provides a smooth grip section for shear-loaded joints
• Bright uncoated finish maintains precise dimensions without coating buildup
• Steel construction delivers the tensile and proof load requirements of the A325 grade

Compatibility

Designed as an OEM-style structural fastener for use with standard 1-8 UNC hex nuts, heavy hex nuts, and flat washers in steel fabrication and construction applications where ASTM A325 high-strength bolts are specified.

Installation Notes

Installation should be performed by qualified ironworkers or structural mechanics following applicable AISC and RCSC specifications for high-strength bolt assemblies. Always use calibrated torque wrenches or tension-control tooling as required by the connection type, and ensure the nut, bolt, and washer set meets the specified ASTM A325 assembly requirements. De-energize or isolate adjacent systems before working in energized or load-bearing structures. Never reuse a bolt that has been fully tensioned, as the material may have yielded beyond design limits.