Value Collection KP44122 5/8-11 X 4 in Grade 8 Hex Cap Screw 25pk

Product Description

The VALUE COLLECTION KP44122 is a 5/8-11 UNC hex head cap screw designed for heavy-duty fastening applications requiring high tensile strength. Manufactured from Grade 8 steel with a zinc-plated finish, this screw meets ASTM A354 BD standards for mechanical properties and corrosion resistance. The partially threaded shank measures 4 inches under the head, providing a grip section that resists loosening under vibration and shear loads. Sold in packs of 25, this fastener is a standard choice for structural assemblies, equipment mounting, and mechanical connections where high-strength hardware is specified.

This fastener is used across a wide range of trade and industrial applications including HVAC equipment mounting, mechanical room installations, structural steel connections, and general equipment assembly. The 5/8-11 UNC thread size is a common specification in commercial and industrial mechanical work. The zinc plating provides moderate corrosion protection suitable for interior and sheltered exterior environments. Licensed trades and general contractors working to equipment manufacturer torque specifications will find this a standard replacement or stocking fastener.

Key Features

• Grade 8 steel construction meets ASTM A354 BD mechanical requirements for high-strength applications
• 5/8-11 UNC thread pattern for compatibility with standard inch-series nuts and tapped holes
• 4-inch length under head with partial threading for shear-load and grip-section performance
• Zinc-plated finish provides corrosion resistance for interior and sheltered installations
• Hex head drive style for use with standard wrenches and impact tools
• Sold in packs of 25 for stocking and recurring maintenance use

Compatibility

Designed as a standard 5/8-11 UNC Grade 8 hex head cap screw for use with any application specifying ASTM A354 BD high-strength inch-series fasteners in this thread size and length.

Installation Notes

Installation should be performed by a qualified mechanic or tradesperson following the equipment manufacturer torque specifications for Grade 8 fasteners. Always use a calibrated torque wrench and appropriate hardened flat washers where specified. De-energize and lock out equipment before fastener removal or installation on live mechanical or electrical assemblies. Do not substitute a lower-grade fastener where Grade 8 is specified by the manufacturer.