Value Collection HCI30750450NG-005BX Hex Head Bolt 3/4-10

Product Description

The VALUE COLLECTION HCI30750450NG-005BX is a 3/4-10 UNC hex head bolt designed for structural fastening applications in steel construction and heavy-duty assemblies. It is manufactured from Grade A325 steel with a hot-dipped galvanized finish, providing corrosion resistance in exposed or outdoor environments. The bolt measures 4.5 inches in length under the head and features partial threading, which is standard for structural bolts where the shank must bear shear loads in the grip area. At 0.90 pounds, this is a substantial fastener suited for ironwork, structural steel connections, and heavy mechanical assemblies installed by ironworkers, millwrights, and structural contractors.

This bolt is used in structural steel connections, beam-to-column assemblies, heavy equipment mounting, and similar high-load applications where ASTM A325 compliance is specified by engineering drawings or code. The hot-dipped galvanized finish makes it appropriate for exterior structural work, bridge components, utility structures, and other installations exposed to moisture or corrosive environments. Partial threading ensures the unthreaded shank spans the shear plane of the joint, meeting standard structural bolt installation practice.

Key Features

• Grade A325 steel meets ASTM A325 structural bolt standard for high-strength fastening
• Hot-dipped galvanized finish provides durable corrosion resistance for exterior and exposed applications
• Partially threaded shank allows the unthreaded body to carry shear loads across the grip length
• 3/4-10 UNC thread is a common structural bolt size compatible with standard hex nuts and washers
• 4.5-inch length under head suits typical multi-ply structural steel and heavy base plate connections
• Inch measurement system; sold individually for low-quantity procurement flexibility

Compatibility

Designed as an ASTM A325-compliant structural hex head bolt for use with standard 3/4-10 UNC heavy hex nuts and F436 structural washers in steel-to-steel bolted connections per applicable structural codes.

Installation Notes

Installation of ASTM A325 structural bolts must be performed by qualified ironworkers or structural contractors in accordance with AISC and RCSC Specification for Structural Joints requirements. Snug-tighten all bolts in the joint before progressing to final pretensioning. Do not use impact tools that have not been calibrated for the required pretension level, and do not reuse A325 bolts that have been fully pretensioned. Galvanized bolts should be paired with galvanized nuts that have been lubricated per ASTM A563 requirements.