Armor Coat UST235743 Hex Head Cap Screw Grade 8

Product Description

The ARMOR COAT UST235743 is a Grade 8 steel hex head cap screw in a 1/4-28 UNF thread configuration with a 1-1/4-inch length under head. It features partial threading and an Armor Coat finish for corrosion resistance. This fastener meets ASME B18.2.1, ASME/ANSI B18.2.1, and SAE J429 standards, making it appropriate for high-strength bolting applications where dimensional precision and material grade are specified by the job. Tradespeople, maintenance technicians, and assembly professionals working with inch-series hardware will find this screw sized for controlled-torque installations.

This hex head cap screw is suited for mechanical assemblies, structural connections, and equipment mounting applications that require a fine-thread, high-strength fastener in the 1/4-inch diameter class. The 1/4-28 UNF thread standard is common in precision mechanical and industrial applications where vibration resistance and tight thread engagement are priorities. The Armor Coat finish provides a layer of surface protection appropriate for environments where bare steel would be vulnerable to oxidation.

Key Features

• Grade 8 steel construction for high tensile strength in demanding fastening applications
• 1/4-28 UNF fine thread for improved vibration resistance and precise torque control
• Partially threaded shank for applications requiring a bearing surface or shoulder engagement
• Armor Coat finish provides corrosion protection over bare steel
• Meets ASME B18.2.1, ASME/ANSI B18.2.1, and SAE J429 standards
• Inch-series dimensions: 1-1/4 inches measured under head

Compatibility

Designed as a standard inch-series hex head cap screw for use in mechanical assemblies, industrial equipment, and structural applications requiring a 1/4-28 UNF Grade 8 fastener with partial threading.

Installation Notes

Installation should be performed by qualified mechanical or maintenance technicians familiar with high-strength fastener torque requirements. Always verify that mating threaded holes or nuts are rated to the same or higher grade to avoid thread stripping. Use calibrated torque tooling appropriate for Grade 8 hardware. Inspect the Armor Coat finish for damage before installation; do not install fasteners with compromised coatings in corrosion-sensitive applications.