Armor Coat UST235967 Socket Cap Screw 3/8-16 4 in

Product Description

The ARMOR COAT UST235967 is a partially threaded socket cap screw designed for fastening applications that demand a secure, corrosion-resistant hold. It features a 3/8-16 thread size and a 4-inch length under head, making it well suited for medium-to-heavy-duty mechanical assemblies. The hex socket drive accepts a 5/16-inch hex key for installation and removal. Manufactured from alloy steel with an Armor Coat finish, this screw delivers the strength and surface protection required in industrial, HVAC equipment, and mechanical system applications. Installation follows ASME B18.3 standards.

This socket cap screw is used in a wide range of trade and industrial settings, including HVAC equipment assemblies, mechanical enclosures, pump mounts, and structural fastening where a low-profile cap head is required. The partial threading allows for clamping force over a defined grip length, which is typical in bolted joint applications where the shank bears load. Trades including HVAC technicians, pipefitters, millwrights, and general maintenance professionals will encounter this fastener in equipment service and installation work.

Key Features

• 3/8-16 thread size with 4-inch length under head for medium-to-heavy fastening depth
• Partially threaded shank conforms to ASME B18.3 dimensional standards
• Hex socket drive requires a 5/16-inch hex key for installation
• Alloy steel construction provides high tensile strength for demanding mechanical assemblies
• Armor Coat finish adds corrosion resistance for extended service life
• Socket cap head profile keeps the fastener low-profile in tight clearance applications

Compatibility

Designed as an OEM-style and aftermarket replacement socket cap screw for use in mechanical assemblies, equipment mounting, and structural fastening applications requiring a 3/8-16 threaded fastener conforming to ASME B18.3.

Installation Notes

Installation should be performed by a qualified technician using a properly sized 5/16-inch hex key or hex bit driver. Always de-energize and lock out equipment before replacing or tightening fasteners in electrical or mechanical assemblies. Verify thread engagement and torque requirements against the equipment manufacturer specifications before final assembly. Follow applicable codes and standards for the system in which this fastener is being used.