S-92865A636 3/8"-16 x 3" ASME B18.2.1, SAE J429 Medium-Strength Grade 5 Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 120,000 psi ensures reliable performance under heavy loads, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from the zinc plating protects against rust and environmental damage, extending the service life of your assemblies.
• Robust Rockwell C25 hardness provides excellent durability and resistance to wear, maintaining fastener integrity through repeated use.
• Coarse UNC thread design offers faster installation and superior holding power in a wide range of materials, improving assembly efficiency.
• Full threading along the 3" length allows for maximum adjustability and grip, ensuring secure fastening in deep or variable thickness materials.
• Class 2A thread fit guarantees consistent, reliable engagement with standard nuts and tapped holes, minimizing cross-threading and assembly issues.
• External hex drive design enables high-torque application with common tools, facilitating quick and secure installation in confined spaces.

Professional Applications & Engineering Value

This Grade 5 hex head screw is engineered to solve critical challenges in heavy-duty industrial applications where joint integrity is paramount. The zinc plated steel construction combats corrosion in harsh environments, from manufacturing equipment to outdoor structures, while the 3/8"-16 UNC coarse thread provides rapid assembly and exceptional resistance to vibration loosening. The fully threaded design ensures consistent clamping force across the entire 3" length, making it ideal for thick materials or applications requiring adjustable positioning. With 120,000 psi tensile strength and Rockwell C25 hardness, it withstands extreme mechanical stresses, preventing stripping and deformation that compromise safety and performance in machinery, construction, and automotive assemblies.

Specification Summary & Compliance

This fastener features precision Class 2A thread fit and conforms to UNC coarse thread standards for consistent performance. It is manufactured to meet ASME B18.2.1 and SAE J429 specifications, ensuring dimensional accuracy and mechanical properties. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory adherence for global industrial use.