Value Collection KP44124 Hex Cap Screw 5/8-11 X 5 in Grade 8

Product Description

The VALUE COLLECTION KP44124 is a 5/8-11 hex head cap screw engineered for high-strength fastening applications. Manufactured from Grade 8 steel with a zinc-plated finish, this fastener delivers the tensile and proof load ratings required for structural and heavy mechanical assemblies. The 5-inch length under head and Unified National Coarse (UNC) thread form make it suitable for a wide range of bolted connections where torque retention and shear resistance are critical. The partially threaded shank provides a bearing surface that resists lateral loading. HVAC, plumbing, and electrical contractors encounter this fastener when securing equipment bases, structural supports, and mechanical frames.

This cap screw is used in residential and commercial trade installations wherever a high-strength inch-series fastener is required. Typical applications include securing rooftop HVAC equipment curbs, pump bases, electrical panel supports, structural steel connections, and fabricated equipment frames. The zinc-plated finish provides a baseline level of corrosion resistance suitable for interior and protected exterior environments. It ships in a package quantity of 10, making it practical for job-site inventory and service van stocking.

Key Features

• Grade 8 steel construction meets ASTM A354 BD specification for high-strength fastener performance
• 5/8-11 UNC thread size with 5-inch length under head for deep through-bolt and tapped-hole applications
• Partially threaded shank provides a smooth bearing surface for shear-loaded connections
• Zinc-plated finish resists surface oxidation in dry and protected environments
• Inch measurement system with standard hex head drive for use with common hand and impact tools
• Sold in a package quantity of 10 for convenient job-site use

Compatibility

Designed as a standard 5/8-11 UNC Grade 8 hex head cap screw for use in any application requiring an ASTM A354 BD inch-series high-strength fastener with a partially threaded shank.

Installation Notes

Installation should be performed by a qualified mechanic or trade professional using calibrated torque equipment appropriate for Grade 8 fasteners. Always verify that the mating thread, whether tapped or using a nut, is rated to the same or greater strength grade to avoid stripping under load. Refer to equipment manufacturer torque specifications and applicable structural codes when installing in load-bearing assemblies. Inspect threads for damage before installation and do not reuse fasteners that show signs of yielding or deformation.