Value Collection HCI21000550G Hex Head Bolt 1-8 5-1/2 in Grade 2

Product Description

The VALUE COLLECTION HCI21000550G is a Grade 2 steel hex head bolt designed for general-purpose fastening applications across construction, mechanical, and utility installations. Sized at 1-8 thread (1 inch diameter, 8 threads per inch, UNC) with a 5.5-inch length under head, this bolt features a hot-dipped galvanized finish that provides corrosion resistance in exposed or outdoor environments. It is partially threaded, which is the standard configuration for bolting through thick material where a smooth shank is needed in the grip area. Installers in plumbing, HVAC, electrical, and general construction regularly spec Grade 2 galvanized hex bolts for structural connections, equipment mounting, and utility framing work.

This bolt is suited for residential and light commercial applications where ASTM A307 compliance is required. Typical install scenarios include attaching equipment pads, securing structural steel connections, pipe hangers, mechanical mounts, and utility support framing. The hot-dipped galvanized coating makes it appropriate for outdoor, wet, or corrosive environments where plain steel hardware would deteriorate prematurely. A standard hex head accepts common wrenches and impact drivers, making field installation straightforward for any trade professional.

Key Features

• 1-8 UNC thread size, 5.5-inch length under head for deep fastening applications
• Hot-dipped galvanized finish provides heavy-duty corrosion protection for outdoor and wet environments
• Partially threaded shank for proper load distribution through thick material
• Grade 2 steel construction meets ASTM A307 standard for general-purpose fastening
• Standard hex head accepts 1-9/16 inch wrenches and common impact drive tools

Compatibility

Designed as a general-purpose Grade 2 hex head bolt suitable for structural and mechanical fastening applications requiring ASTM A307 compliance and a 1-8 UNC partially threaded configuration.

Installation Notes

Installation is appropriate for any trade professional performing structural, mechanical, or equipment mounting work. Ensure the receiving material is properly drilled or tapped to the correct 1-8 UNC specification before driving the bolt. Use a properly sized wrench or impact tool and follow applicable torque guidelines from the project engineer or relevant building code. In structural applications, consult the applicable building or mechanical code to confirm Grade 2 fastener suitability for the load and joint type.