Value Collection HCI51120300G Hex Cap Screw 1-1/8-7 X 3 in Grade 5

Product Description

The VALUE COLLECTION HCI51120300G is a fully threaded hex head cap screw designed for heavy-duty fastening applications in structural, mechanical, and industrial assemblies. Manufactured from Grade 5 steel with a hot-dipped galvanized finish, this fastener delivers reliable corrosion resistance in outdoor and moisture-exposed environments. The 1-1/8-7 UNC thread profile and 3-inch length under head make it suitable for high-load bolted connections where a strong, standardized fastener is required. Tradespeople working in HVAC equipment mounting, plumbing infrastructure supports, electrical enclosure installations, and general mechanical assembly will find this screw fits standard inch-measurement applications.

This hex head cap screw is suited for residential and commercial construction, equipment mounting, and structural fastening tasks. Its fully threaded shank provides maximum thread engagement throughout the fastener length, which is particularly useful when joining thinner materials or where a nut and washer are used across the full grip length. The hot-dipped galvanized coating offers protection against rust in exposed or outdoor service conditions.

Key Features

• Fully threaded shank for maximum thread engagement along the entire 3-inch length under head
• Grade 5 steel construction for high tensile strength in structural and mechanical applications
• Hot-dipped galvanized finish provides corrosion resistance in outdoor and wet environments
• 1-1/8-7 UNC thread standard ensures compatibility with standard inch-series nuts and tapped holes
• Hex head drive accepts standard hex wrenches and impact sockets for installation and removal

Compatibility

Designed as a standard inch-series UNC hex head cap screw suitable for use with 1-1/8-7 nuts, washers, and tapped holes in structural steel, equipment frames, and mechanical assemblies.

Installation Notes

Installation is typically performed by mechanics, ironworkers, or trade technicians using a standard hex wrench or impact socket sized for the fastener head. Always use a calibrated torque wrench when torque specifications are called out by the equipment manufacturer or applicable structural code. Inspect threads for damage before installation and ensure mating threads are clean and free of debris. Do not exceed the rated load capacity of the fastener grade as listed in ASME or applicable fastener standards.