Armor Coat UST235932 Socket Cap Screw 1/4-20 3-1/2 in

Product Description

The ARMOR COAT UST235932 is a partially threaded socket cap screw designed for high-strength fastening applications in mechanical, HVAC, and industrial equipment assembly. It features a 1/4-20 thread size, a 3-1/2 inch length under head, and a socket cap head driven by a 3/16 inch hex key. Constructed from alloy steel with an Armor Coat finish for corrosion resistance, this screw meets ASME B18.3 standards. It is well suited for securing components in equipment enclosures, brackets, and structural assemblies where a recessed drive head and reliable clamping force are required.

This socket cap screw is used in residential and commercial trade applications wherever a compact, high-strength fastener is needed. Typical install scenarios include mounting brackets, equipment panels, compressor assemblies, pump housings, and structural hardware in HVAC and mechanical systems. The partially threaded shank allows for controlled clamping without thread engagement through the full grip length, which is advantageous in bolted joint applications requiring precise load distribution.

Key Features

• 1/4-20 thread size with 3-1/2 inch length under head
• Partially threaded shank for controlled clamping force
• Alloy steel construction for high tensile strength
• Armor Coat finish provides corrosion resistance
• 3/16 inch hex socket drive for recessed installation
• Meets ASME B18.3 fastener standard

Compatibility

Designed as an OEM-style replacement or service fastener for mechanical assemblies, equipment enclosures, and structural brackets requiring a 1/4-20 socket cap screw with a 3-1/2 inch grip length.

Installation Notes

Installation is performed by general tradespeople, millwrights, or HVAC technicians using a 3/16 inch hex key or Allen driver. De-energize and lock out all equipment before servicing fastened assemblies. Ensure mating threads are clean and free of debris before driving the screw. Do not over-drive; follow equipment manufacturer torque specifications for the specific assembly.