Armor Coat UST235774 Hex Head Cap Screw 3/8-16 X 3 in Grade 8

Product Description

The ARMOR COAT UST235774 is a Grade 8 steel hex head cap screw engineered for high-strength fastening in demanding industrial and mechanical applications. Sized at 3/8-16 thread with a 3-inch length under head, this fastener features a partial thread design and an Armor Coat finish that provides corrosion resistance over the base steel. Manufactured to ASME B18.2.1 and SAE J429 standards, it delivers the dimensional accuracy and tensile strength required for structural and equipment assembly work. Mechanical contractors, millwrights, pipefitters, and maintenance technicians typically reach for Grade 8 hardware when joint loads exceed what lower-grade fasteners can handle.

This cap screw is suited for heavy equipment assembly, structural steel connections, machinery mounting, and general industrial fastening where UNC thread engagement and high clamp load are required. The partial threading allows the unthreaded shank to bear shear loads in bolted joints, making it appropriate for applications where full-thread fasteners are not specified. Sold individually, with a minimum order quantity of 10 pieces.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Armor Coat finish provides corrosion resistance over bare steel
• Partially threaded shank allows shear load bearing at bolt interfaces
• 3/8-16 UNC thread for broad compatibility with standard inch-series hardware
• Meets ASME B18.2.1 and SAE J429 dimensional and material standards
• Hex head drive accepts standard socket and open-end wrenches

Compatibility

Designed as a standard inch-series hex head cap screw for use with 3/8-16 UNC threaded nuts, inserts, and tapped holes in industrial, mechanical, and structural fastening applications.

Installation Notes

Installation is performed by mechanical, maintenance, or construction trades using standard hex socket or open-end wrenches. Always verify thread engagement depth meets joint design requirements before applying final torque. De-energize or depressurize any system before replacing structural fasteners in service. Do not mix Grade 8 fasteners with lower-grade nuts or tapped holes that are not rated for the corresponding clamp load.