Armor Coat UST235873 Hex Head Cap Screw 3/4-16 Grade 8

Product Description

The ARMOR COAT UST235873 is a Grade 8 steel hex head cap screw with a 3/4-16 UNF thread and a 2-3/4 inch length under head. It is partially threaded, providing a smooth shank section that resists shear loads in bolted joints. This fastener meets ASME B18.2.1 and SAE J429 standards, confirming dimensional accuracy and mechanical strength. It is used in heavy-duty structural and mechanical assemblies where high tensile strength and clamping force are required. Installers working in industrial, HVAC equipment mounting, or mechanical system applications rely on Grade 8 hardware for critical connections where fastener failure is not an option.

This cap screw is suited for applications demanding high-strength inch-series fasteners. It fits standard 3/4-16 UNF tapped holes and is appropriate for equipment frames, mounting brackets, compressor bases, and similar structural joints in commercial and industrial settings. The partial threading is intentional and correct for applications where shank grip length matters for joint integrity. Sold individually, making it practical for single-fastener replacement or low-quantity service work.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• 3/4-16 UNF thread for fine-pitch engagement and vibration resistance
• Partially threaded shank resists shear loads in structural joints
• Meets ASME B18.2.1 dimensional standards and SAE J429 mechanical requirements
• Inch measurement system, length under head is 2-3/4 inches
• Sold as a single unit, suitable for replacement or repair work

Compatibility

Designed for use in any application requiring a 3/4-16 UNF Grade 8 hex head cap screw with a 2-3/4 inch length under head, including heavy equipment frames, mechanical mounting assemblies, and structural bolted connections.

Installation Notes

Installation should be performed by a qualified mechanic or technician familiar with inch-series fastener torque requirements for Grade 8 hardware. De-energize and isolate any equipment before accessing fastener locations on live systems. Use a properly sized hex socket or wrench to avoid rounding the head. Do not substitute a lower-grade fastener in applications specified for Grade 8.