Armor Coat UST235939 Hex Socket Cap Screw 5/16-18

Product Description

The ARMOR COAT UST235939 is a hex socket cap screw designed for applications requiring a secure, corrosion-resistant fastener in tight or recessed spaces. It features a 5/16-18 UNC thread with a 7/8-inch length under head and accepts a 1/4-inch hex drive. Built from alloy steel and finished with an Armor Coat coating, this screw delivers improved corrosion resistance compared to uncoated fasteners. It is fully threaded and manufactured to ASME B18.3 standards, making it a dependable choice for precision mechanical assemblies in trade and industrial settings.

This fastener suits a wide range of trade applications including HVAC equipment assembly, electrical enclosures, mechanical supports, and structural brackets where a recessed drive head is required. The socket cap style allows installation in confined areas where a standard hex head wrench cannot reach. Technicians working on equipment panels, pipe supports, and machinery frames will find this screw a practical fit for general-purpose fastening tasks.

Key Features

• 5/16-18 UNC thread size for broad compatibility with standard tapped holes
• 7/8-inch length under head for medium-depth fastening applications
• 1/4-inch hex socket drive for use with standard Allen keys or hex bit drivers
• Fully threaded shank provides maximum thread engagement
• Alloy steel construction for high tensile strength
• Armor Coat finish provides enhanced corrosion resistance over bare steel
• Manufactured to ASME B18.3 dimensional standards

Compatibility

Designed as a standard 5/16-18 UNC hex socket cap screw for use in any application requiring an ASME B18.3-compliant fastener with a 1/4-inch hex drive and 7/8-inch length under head.

Installation Notes

Install using a 1/4-inch hex key or socket bit driver; ensure the drive tool is fully seated before applying torque to avoid stripping the socket. Verify the mating tapped hole is clean and free of debris before threading. Always follow equipment manufacturer specifications and applicable mechanical codes when selecting fasteners for structural or pressure-bearing assemblies.