Value Collection HCI20873400G6 Hex Head Bolt 7/8-9 34 in

Product Description

The VALUE COLLECTION HCI20873400G6 is a 7/8-9 UNC hex head bolt designed for heavy structural and general fastening applications. It is manufactured from Grade 2 steel with a hot-dipped galvanized finish that provides corrosion resistance in outdoor and moisture-exposed environments. At 34 inches in length under head with partial threading, this bolt is suited for through-bolting thick assemblies where a fully threaded shank is not required. It meets ASTM A307 standards, making it appropriate for low-carbon steel structural bolting work handled by ironworkers, contractors, and maintenance professionals.

This bolt is used in structural steel connections, heavy timber framing, equipment mounting, and industrial maintenance applications. The partially threaded shank allows the unthreaded grip section to carry shear loads without thread engagement in the bearing zone. The hot-dipped galvanized coating makes it a common choice for outdoor infrastructure, agricultural structures, utility installations, and any application where bare steel fasteners would be subject to accelerated corrosion.

Key Features

• 7/8-9 UNC thread size with 34-inch length under head for long through-bolt applications
• Partially threaded shank provides a clean grip section for shear load transfer
• Hot-dipped galvanized finish delivers superior corrosion resistance over electroplated alternatives
• Grade 2 steel construction meets ASTM A307 standard for low-carbon structural bolting
• Inch measurement system with UNC thread standard for compatibility with standard SAE hardware

Compatibility

Designed as an OEM-style replacement or new-installation fastener for structural and general-purpose bolting applications requiring 7/8-9 UNC thread and conformance to ASTM A307 specifications.

Installation Notes

Installation is typically performed by ironworkers, structural contractors, or maintenance mechanics using standard hex wrenches or impact tools sized for 7/8-inch fasteners. Confirm hole clearance and grip length before installation to ensure the unthreaded shank section spans the full bearing zone. Apply a compatible nut and washer rated for galvanized fasteners to avoid galvanic incompatibility. Follow applicable building codes and engineering specifications for torque requirements on structural connections.