Armor Coat UST235946 Hex Socket Cap Screw 5/16-18

Product Description

The ARMOR COAT UST235946 is a hex socket cap screw designed for industrial and mechanical fastening applications. It features a 5/16-18 UNC thread size and measures 2.5 inches in length under the head, making it suitable for moderate-depth fastening in structural assemblies. The screw is partially threaded and driven by a 1/4-inch hex key. Constructed from alloy steel with an ARMOR COAT finish coating, it provides corrosion resistance and durability in demanding service environments. This fastener meets ASME B18.3 standards and is a reliable choice for trade and maintenance professionals working across mechanical, HVAC, plumbing, and general industrial applications.

This fastener is used in a wide range of commercial and industrial applications where a socket-drive cap screw with controlled thread engagement is required. Partially threaded construction allows for clamping force between mating components. The ARMOR COAT finish is suited for environments where standard zinc plating would be insufficient. Typical installers include millwrights, pipefitters, HVAC mechanics, and maintenance technicians assembling or servicing equipment panels, brackets, and mechanical assemblies.

Key Features

• 5/16-18 UNC thread for reliable engagement in standard tapped holes
• 2.5 inches length under head for moderate-depth fastening applications
• Partially threaded design provides clamping action between joined components
• 1/4-inch hex drive for use with standard Allen keys or hex bit drivers
• Alloy steel construction with ARMOR COAT finish for corrosion resistance
• Meets ASME B18.3 dimensional and performance standards

Compatibility

Designed as an OEM-style replacement or standard fastener for any application requiring a 5/16-18 UNC hex socket cap screw conforming to ASME B18.3 specifications.

Installation Notes

Installation requires a 1/4-inch hex key or matching socket bit. Ensure the receiving tapped hole is clean and free of debris before threading. Apply appropriate thread preparation per the assembly specification. Follow applicable mechanical or electrical codes when fastening equipment enclosures or structural components.