Armor Coat UST235738 Hex Head Cap Screw 1/4-20 X 2-3/4 in

Product Description

The ARMOR COAT UST235738 is a Grade 8 steel hex head cap screw with a 1/4-20 UNC thread and a 2-3/4 inch length under head. It features partial threading and an Armor Coat finish for corrosion resistance. This fastener meets ASME B18.2.1 and SAE J429 standards, making it appropriate for structural and mechanical assemblies where high-strength fasteners are specified. It is installed by mechanics, millwrights, HVAC technicians, plumbers, and electricians in applications requiring a reliable, high-strength bolted connection.

This cap screw is suited for use in residential and commercial mechanical systems, equipment mounting, structural steel connections, and general industrial assemblies. The 1/4-20 UNC thread pattern is one of the most common inch-series thread sizes, making this fastener a standard fit across a wide range of equipment frames, brackets, and mounting hardware in trade and industrial settings.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Armor Coat finish provides corrosion protection in demanding environments
• Partially threaded shank allows clamping load distribution across the grip length
• 1/4-20 UNC thread standard ensures broad tool and hardware compatibility
• Meets ASME B18.2.1 and SAE J429 standards for dimensional and mechanical conformance

Compatibility

Designed as a standard inch-series hex head cap screw for use in any application specifying a 1/4-20 UNC Grade 8 partially threaded fastener with a 2-3/4 inch length under head.

Installation Notes

Install using a standard hex wrench or socket set appropriate for the hex drive size. Ensure mating threads are clean and free of debris before installation. Verify that Grade 8 fasteners are specified for the joint before use, as substituting higher-strength fasteners in joints designed for lower grades can affect clamping dynamics. Follow applicable mechanical and structural codes for torque requirements based on joint design.