Armor Coat UST235762 Hex Head Cap Screw 5/16-24 Grade 8

Product Description

The ARMOR COAT UST235762 is a Grade 8 steel hex head cap screw with a 5/16-24 UNF thread and a 1-1/4 inch length under head. It is fully threaded and finished with an Armor Coat surface coating for corrosion resistance. Manufactured to ASME B18.2.1 and SAE J429 standards, this fastener is suited for high-strength bolted connections in mechanical, HVAC, and general trade assemblies where a fine-thread, inch-series cap screw is required. Grade 8 classification indicates a minimum tensile strength appropriate for demanding structural and equipment fastening applications.

This cap screw is used across a broad range of commercial and industrial service applications where fine-thread engagement and high tensile strength are needed. Typical install scenarios include securing brackets, equipment housings, motor mounts, and structural assemblies on HVAC units, pumps, and mechanical equipment. The 5/16-24 UNF thread is common in precision and high-vibration environments where fine-thread fasteners resist loosening better than coarse-thread alternatives. Installation is performed by licensed tradespeople or qualified technicians as part of larger assembly or equipment service work.

Key Features

• Grade 8 steel construction for high tensile strength in demanding fastening applications
• 5/16-24 UNF fine thread for precision fit and vibration resistance
• Fully threaded along the 1-1/4 inch length under head
• Armor Coat finish provides corrosion protection for extended service life
• Meets ASME B18.2.1 and SAE J429 standards for dimensional and mechanical compliance
• Inch measurement system, length measured under head per standard convention

Compatibility

Designed as an OEM-style replacement or maintenance fastener for applications requiring a 5/16-24 UNF fully threaded hex head cap screw in Grade 8 steel with Armor Coat finish.

Installation Notes

Installation is typically performed by HVAC technicians, plumbers, electricians, or mechanical contractors as part of equipment assembly or field service. Always de-energize and lock out equipment before replacing or installing fasteners on live machinery. Use the correct hex socket or wrench size for 5/16 inch hex head fasteners to avoid rounding the head. Follow equipment manufacturer torque specifications and applicable mechanical codes when tightening Grade 8 fasteners.