S-92800A415 5/8"-11 x 3 1/4" 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications
• Superior mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high-stress conditions
• Efficient installation and removal thanks to the external hex drive and 15/16" head width, allowing for high torque application with standard tools
• Optimized thread engagement with UNC coarse threading and Class 2A fit, ensuring secure fastening and vibration resistance in various materials
• Full thread coverage across the 3 1/4" length for maximum grip and adjustability in demanding assembly applications
• Regulatory compliance assurance with RoHS 3 and REACH standards, meeting strict industrial safety and environmental requirements
• Right-hand thread design for standard clockwise tightening, compatible with common assembly processes and equipment

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these 5/8"-11 UNC hex head screws deliver critical performance where reliability matters most. The 18-8 stainless steel composition provides excellent resistance to corrosion and oxidation, making them ideal for marine, chemical processing, and food industry equipment where moisture and chemicals are present. The coarse UNC threading with Class 2A fit ensures superior holding power in both soft and hard materials, while the external hex drive design allows for high-torque installation without stripping. With 80,000 psi tensile strength and Rockwell B70 hardness, these fully threaded fasteners maintain integrity under extreme mechanical stress, vibration, and thermal cycling conditions common in structural assemblies, machinery manufacturing, and infrastructure projects.

Specification Summary & Compliance

This 5/8"-11 UNC hex head screw features inch system measurements with precise Class 2A thread fit tolerance for consistent performance. The product meets RoHS 3 (2015/863/EU) compliance for restricted substance control and REACH (EC 1907/2006) regulations for chemical safety. Manufacturing specifications include right-hand UNC coarse threading with 0.625" diameter, 3 1/4" fully threaded length, and external hex drive configuration for standardized industrial use.