Value Collection HCI51000600G Hex Cap Screw 1-8x6 Grade 5 Galvanized

Product Description

The VALUE COLLECTION HCI51000600G is a partially threaded hex head cap screw designed for heavy-duty fastening applications across mechanical, structural, and industrial trades. Built from Grade 5 steel with a hot-dipped galvanized finish, this fastener delivers solid tensile strength and corrosion resistance in outdoor, wet, or high-humidity environments. The 1-8 UNC thread size paired with a 6-inch length under head makes it well suited for through-bolting thick stock, structural connections, and equipment mounting where a full-thread fastener would not provide adequate clamping force.

This cap screw is used in a wide range of trade and industrial applications including HVAC equipment mounting, structural steel assembly, machinery installation, and general construction fastening. The partial thread design concentrates clamping load at the shank rather than along the full bolt length, which is preferred in joints requiring a smooth shank to pass through clearance holes. Installers in mechanical, electrical, and general construction trades will encounter this fastener class on a routine basis.

Key Features

• Grade 5 steel construction provides minimum tensile strength suitable for general structural and mechanical fastening
• Hot-dipped galvanized finish offers corrosion resistance for outdoor and high-moisture environments
• Partially threaded shank supports proper clamping in clearance-hole joint applications
• UNC (Unified National Coarse) thread standard ensures broad compatibility with standard nuts and tapped holes
• 1-8 thread size is a common heavy fastener designation frequently specified in structural and equipment installation work

Compatibility

Designed as a standard inch-series UNC hex head cap screw compatible with 1-8 threaded nuts, washers, and tapped holes following Unified National Coarse thread specifications.

Installation Notes

Installation should be performed by a qualified mechanic, ironworker, or journeyman familiar with fastener torque requirements for Grade 5 hardware at this diameter. Always use the correct size hex socket or open-end wrench to avoid rounding the head. Apply a flat washer under the head when bearing surface area is a concern. Follow applicable structural or mechanical codes for torque specifications based on joint type and loading conditions.