Armor Coat UST235770 Hex Head Cap Screw 3/8-16 Grade 8

Product Description

The ARMOR COAT UST235770 is a Grade 8 steel hex head cap screw designed for high-strength fastening applications across mechanical, structural, and industrial assemblies. This screw features a 3/8-16 UNC thread with a 1-3/4 inch length under head and is partially threaded, making it well-suited for clamping applications where a shank section is required to bear shear loads. The Armor Coat finish provides corrosion resistance over the Grade 8 steel substrate. Produced to ASME B18.2.1 and SAE J429 standards, this fastener meets established dimensional and mechanical property requirements. Typically installed by maintenance technicians, millwrights, and field service professionals working on equipment assemblies, structural connections, and machinery mounting.

This hex head cap screw is used in a wide range of industrial, commercial, and trade applications where high tensile strength and dimensional consistency are required. The 3/8-16 UNC thread is one of the most common coarse-thread sizes in inch-series fastener applications, making it a standard replacement or service item for mechanical assemblies in HVAC equipment mounting, pump and motor bases, structural brackets, and general machinery. The partially threaded body is appropriate for through-bolt and clamped-joint configurations where thread engagement is controlled.

Key Features

• Grade 8 steel construction for high tensile and proof load strength
• Armor Coat finish for improved corrosion resistance
• 3/8-16 UNC coarse thread, partially threaded body
• 1-3/4 inch length under head per ASME B18.2.1 dimensional standard
• Meets SAE J429 mechanical property requirements for Grade 8 fasteners
• Hex drive head accepts standard hex wrenches and sockets

Compatibility

Designed as a standard inch-series hex head cap screw for use in any application requiring a 3/8-16 UNC partially threaded fastener with Grade 8 mechanical properties and Armor Coat finish.

Installation Notes

Install using the appropriate hex wrench or socket sized for a 3/8 inch hex head cap screw. Ensure mating threads are clean and free of debris before installation. Always torque fasteners to the value specified by the equipment manufacturer or applicable engineering standard for Grade 8 hardware. De-energize or lock out equipment before performing any fastener service on powered machinery.