Value Collection HCI51000550G-010BX Hex Cap Screw Grade 5

Product Description

The VALUE COLLECTION HCI51000550G-010BX is a partially threaded hex head cap screw designed for heavy-duty fastening applications in structural, mechanical, and industrial assemblies. Built to Grade 5 steel specifications, this fastener delivers reliable tensile strength for demanding connections. The hot-dipped galvanized finish provides corrosion resistance suitable for outdoor, wet, or chemically exposed environments. The 1-8 thread size follows UNC (Unified National Coarse) standards, and the 5-1/2-inch length under head accommodates thick material stacks or deep through-bolt installations. Tradespeople in construction, HVAC equipment mounting, plumbing support work, and general mechanical fabrication will find this a workable choice for standard bolted connections.

This cap screw is suited for use in residential and commercial construction, mechanical equipment mounting, structural steel connections, and utility infrastructure work. Partial threading allows the unthreaded shank to bear shear loads in bolted joints, which is a common requirement in structural connections. The UNC thread form is widely compatible with standard Grade 5 nuts and tapped holes in inch-measurement assemblies. Installation typically requires a standard hex wrench, impact driver with hex socket, or open-end wrench appropriate for the 1-inch nominal diameter fastener.

Key Features

• Grade 5 steel construction meets standard tensile and proof load requirements for medium-strength fastener applications
• Hot-dipped galvanized finish provides corrosion resistance for outdoor and exposed-environment installations
• Partially threaded shank allows the bolt to carry shear loads across joint interfaces
• UNC thread standard ensures broad compatibility with standard inch-measurement nuts and tapped holes
• 1-8 thread size and 5-1/2-inch length under head suits heavy material stacks and structural through-bolt applications

Compatibility

Designed as a standard UNC inch-series hex head cap screw compatible with Grade 5 or heavier hex nuts, flat washers, and lock washers in 1-8 UNC tapped or through-hole assemblies.

Installation Notes

Installation should follow applicable torque specifications for Grade 5 fasteners as referenced in ASME or job-specification guidelines. Always use a properly sized hex socket or wrench to avoid rounding the head. Inspect threads and mating nut threads for damage before installation. Do not exceed the rated proof load for the grade when applying torque in structural connections.