S-95362A503 5/8"-11 x 1 3/4" ASME B18.2.1, SAE J429, ASTM A354BD, MS90728-163 Mil. Spec. High-Strength Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 150,000 psi ensures reliable performance under extreme loads, reducing the risk of fastener failure in critical applications.
• Superior corrosion resistance from Zinc Yellow-Chromate plating extends service life in harsh industrial environments, minimizing maintenance and replacement costs.
• High hardness (Rockwell C33) provides excellent wear resistance and durability, maintaining thread integrity through repeated use and high-torque installations.
• Full UNC coarse threading allows for faster installation and better grip in a wide range of materials, improving assembly efficiency.
• External hex drive design offers secure tool engagement for easy tightening with standard wrenches, reducing installation time and tool slippage.
• Class 2A thread fit ensures consistent, reliable engagement with nuts and tapped holes, promoting secure connections without binding.
• Compliance with major industry standards (ASME B18.2.1, SAE J429, ASTM A354BD) guarantees interchangeability and reliability in regulated applications.

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, this Grade 8 hex head screw delivers robust performance where high tensile strength and corrosion resistance are critical. The steel material combined with Zinc Yellow-Chromate plating effectively combats rust and chemical exposure in environments like construction machinery, automotive assemblies, and structural frameworks. Its fully threaded UNC coarse design ensures rapid installation and superior holding power in thick materials, reducing assembly time while maintaining joint integrity. By meeting ASME B18.2.1 and other key standards, it provides reliable, standardized solutions for engineers seeking durable fasteners that withstand vibration, high stress, and environmental challenges without compromising safety or performance.

Specification Summary & Compliance

This fastener features precise Class 2A thread fit and UNC coarse threading with a 5/8"-11 thread size, ensuring dimensional accuracy per ASME B18.2.1, SAE J429, and ASTM A354BD specifications. It is fully compliant with REACH (EC 1907/2006) regulations, supporting environmental and safety standards in industrial supply chains.