Armor Coat UST235923 Socket Cap Screw 1/4-20 1-1/4 in

Product Description

The ARMOR COAT UST235923 is a fully threaded socket cap screw designed for high-strength fastening applications in mechanical, industrial, and trade service work. Built from alloy steel with an Armor Coat finish for corrosion resistance, this screw features a 1/4-20 thread size and a 1-1/4 inch length under head. The socket cap head accepts a 3/16 inch hex key drive, making it well suited for recessed or torque-critical fastening where a standard hex head wrench cannot reach. It conforms to ASME B18.3 standards, ensuring dimensional consistency across replacement and maintenance applications.

This socket cap screw is used across a wide range of residential and commercial mechanical installations, including HVAC equipment fastening, pump and motor mounting, electrical enclosure assembly, and general equipment repair. The 1/4-20 thread is one of the most common inch-series fastener sizes in trade work, making this screw a reliable replacement or service part for technicians working on mechanical assemblies, brackets, panels, and structural hardware. It is sold individually with a minimum order quantity of 100 units, making it appropriate for shop stock or service van inventory.

Key Features

• Alloy steel construction provides high tensile strength for demanding fastening applications
• Armor Coat finish offers corrosion resistance in exposed or high-humidity environments
• Fully threaded along the shank for maximum thread engagement
• 1/4-20 thread size with 1-1/4 inch length under head for versatile fitment
• 3/16 inch hex key drive for use in recessed or tight-clearance installations
• Conforms to ASME B18.3 dimensional standard for consistent tolerances

Compatibility

Designed as an OEM-style replacement or service stock fastener for mechanical assemblies requiring a 1/4-20 fully threaded socket cap screw with a 1-1/4 inch length under head, per ASME B18.3 specifications.

Installation Notes

Installation is performed by maintenance technicians, HVAC service professionals, plumbers, and electricians as part of equipment assembly or repair. Power down and de-energize all associated equipment before removing or installing fasteners on electrical or mechanical assemblies. Use a properly sized 3/16 inch hex key or Allen driver to avoid stripping the drive socket. Follow applicable equipment manufacturer torque guidelines and relevant codes such as NEC or IFGC when fastening components within regulated systems.