S-92800A281 5/8"-11 x 11 1/2" 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional tensile strength of 80,000 psi ensures reliable performance under heavy loads
• Optimized thread design with UNC coarse threading and Class 2A fit provides secure fastening and easy installation
• Durable Rockwell B70 hardness maintains structural integrity and resists wear over extended use
• Partially threaded configuration allows for precise clamping force control in specific assembly applications
• External hex drive compatibility enables quick installation with standard tools, reducing assembly time
• Full regulatory compliance with RoHS 3 and REACH standards ensures environmental and safety adherence

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw delivers critical engineering advantages for demanding industrial applications. The 18-8 stainless steel composition provides excellent corrosion resistance, making it suitable for outdoor equipment, marine environments, and chemical processing facilities where moisture and corrosive elements are concerns. The coarse UNC threading offers superior grip in softer materials and faster installation compared to fine-thread alternatives. With its partially threaded design, this fastener provides unthreaded shank sections that enhance shear strength while allowing for precise joint clamping. The external hex drive accommodates standard wrenches for high-torque applications, ensuring secure connections in structural assemblies, heavy machinery, and construction projects where vibration resistance and long-term reliability are paramount.

Specification Summary & Compliance

This heavy-duty hex head screw features precise Class 2A thread fit tolerances according to UNC standards, ensuring consistent performance and interchangeability. The inch-system specifications include a 5/8"-11 thread size with right-hand orientation and 1 3/4" minimum thread length on an 11 1/2" overall length. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming the absence of restricted hazardous substances. The combination of 80,000 psi tensile strength and Rockwell B70 hardness validates the screw's mechanical properties for rigorous industrial applications.