Value Collection HCI30870475NG-005BX Hex Head Bolt A325

Product Description

The VALUE COLLECTION HCI30870475NG-005BX is a 7/8-9 UNC partially threaded hex head bolt manufactured from Grade A325 steel with a hot-dipped galvanized finish. It measures 4-3/4 inches in length under the head and weighs 1.326 pounds. Conforming to ASTM A325 structural bolt standards, this fastener is designed for high-strength bolted connections in steel-to-steel structural assemblies. It is installed by ironworkers, structural steel erectors, and mechanical contractors working on code-governed connections requiring verified tensile and proof-load performance.

This bolt is suited for structural steel framing applications in both commercial and industrial construction. The hot-dipped galvanized coating provides corrosion resistance for exposed or outdoor installations. Partial threading is standard for structural bolt applications where the shank bears load across the grip length. The 7/8-9 thread size and 4-3/4 inch under-head length are common in heavy structural bolted joints.

Key Features

• Grade A325 steel meets ASTM A325 structural bolt requirements for high-strength connections
• Hot-dipped galvanized finish provides enhanced corrosion protection over electroplated alternatives
• Partially threaded shank allows the bolt body to bear shear load across the grip
• 7/8-9 UNC thread with 4-3/4 inch length under head suits standard heavy structural joint configurations
• Inch measurement system; compatible with standard UNC hex nuts and structural washers

Compatibility

Designed as an ASTM A325 structural replacement fastener for use with standard 7/8-9 UNC heavy hex nuts and structural flat washers in steel-to-steel bolted connections.

Installation Notes

Installation should be performed by qualified ironworkers or structural mechanics following applicable AISC and RCSC specification requirements for structural bolting. Snug-tighten all bolts in a joint before proceeding to final tightening using the turn-of-nut, calibrated wrench, or direct tension indicator method as specified by the engineer of record. Do not use impact tools without verifying the tightening method is approved for A325 bolted joints. Follow applicable OSHA and building code requirements for personal protective equipment and fall protection during overhead or elevated structural work.