Value Collection HCI50870300G-015BX Hex Head Cap Screw

Product Description

The VALUE COLLECTION HCI50870300G-015BX is a 7/8-9 partially threaded hex head cap screw manufactured from Grade 5 steel with a hot-dipped galvanized finish. The screw measures 3 inches under the head and uses a Unified National Coarse (UNC) thread standard. The galvanized coating provides corrosion resistance suited to outdoor, wet, or high-humidity environments. This fastener is a standard choice for structural connections, equipment mounting, and mechanical assemblies where corrosion protection and mid-grade tensile strength are required. Electricians, plumbers, HVAC technicians, and general contractors all routinely work with this fastener class on mechanical and structural applications.

This hex head cap screw is appropriate for use in both residential and commercial construction and mechanical service work. Typical applications include securing structural steel members, mounting HVAC equipment frames, attaching brackets and flanges, and general-purpose bolted connections. The partially threaded shank provides a shoulder bearing surface that resists shear loads, making it well suited for joints where the bolt passes through multiple materials or load-bearing plates. Its inch-series sizing and UNC thread form are compatible with the vast majority of standard hex nuts and flanged fasteners available in the North American market.

Key Features

• 7/8-9 UNC thread form, compatible with standard inch-series hex nuts and hardware
• 3-inch length under head with partial threading, providing an unthreaded shank for shear-load applications
• Grade 5 steel construction offering mid-grade tensile strength for structural and mechanical fastening
• Hot-dipped galvanized finish for corrosion resistance in outdoor and high-moisture environments
• Hex drive head accepts standard open-end, box, or impact wrenches

Compatibility

Designed for use with standard 7/8-9 UNC hex nuts, flat washers, and lock washers in inch-series fastener applications.

Installation Notes

Installation is performed with a standard open-end, box-end, or impact wrench sized for a 7/8-inch hex head. Always verify the mating nut and hardware are rated to the same or higher grade as the fastener before assembly. Ensure mating surfaces are clean and free of debris prior to assembly to achieve proper clamp load. Follow applicable building or mechanical codes for torque and joint design requirements.