Armor Coat UST235966 Hex Socket Cap Screw 3/8-16 Unc

Product Description

The ARMOR COAT UST235966 is a hex socket cap screw designed for demanding fastening applications where corrosion resistance and mechanical strength are required. Manufactured from alloy steel with an Armor Coat finish, this fastener meets ASME B18.3 standards. It carries a 3/8-16 UNC thread size, a 3.5-inch length under head, and partial threading along the shank. Drive engagement is achieved through a 5/16-inch hex socket. This type of fastener is commonly installed by millwrights, pipefitters, HVAC technicians, and maintenance professionals working with mechanical assemblies and structural connections.

This screw is suited for mechanical and industrial installations where a flush or recessed head profile is needed. The partial threading allows for improved clamping force on thicker materials. The Armor Coat finish provides corrosion resistance in environments exposed to moisture, chemicals, or outdoor conditions. Typical applications include equipment mounting, structural bracketing, and trade-specific mechanical assemblies found in HVAC, plumbing, and related service industries.

Key Features

• 3/8-16 UNC thread for broad compatibility with standard threaded fastener applications
• 3.5-inch length under head suitable for thicker material stacks
• Partial threading for enhanced clamping performance
• 5/16-inch hex socket drive for use with standard hex keys and socket drivers
• Alloy steel construction for high tensile strength
• Armor Coat finish provides corrosion resistance in harsh service environments
• Conforms to ASME B18.3 fastener standard

Compatibility

Designed as an OEM-style replacement or direct-fit fastener for mechanical assemblies requiring a 3/8-16 UNC hex socket cap screw with a 3.5-inch length under head and partial threading per ASME B18.3.

Installation Notes

Installation should be performed by a qualified technician or tradesperson familiar with fastener torque requirements and the assembly being serviced. Ensure mating threads are clean and free of debris before installation. De-energize and isolate any equipment before replacing fasteners in live mechanical or electrical assemblies. Do not mix fastener grades or finishes in structural or load-bearing connections without verifying compatibility with the original equipment specification.