S-91850A040 1 1/4"-7 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction for extended service life in harsh chemical and marine environments
• Enhanced gripping surface from the extra wide hex profile provides superior torque transmission and easier installation with standard tools
• Reliable thread engagement with Class 2B thread fit ensures consistent performance and vibration resistance in heavy-duty applications
• Quick assembly efficiency through coarse UNC threading reduces installation time while maintaining secure fastening
• Exceptional mechanical strength with 2" width and 1 7/32" height dimensions provides robust load distribution and structural integrity
• Industry compliance assurance with RoHS 3 and REACH regulations meets stringent environmental and safety standards
• Universal compatibility with right-hand thread direction and external hex drive design works seamlessly with standard inch-system components

Professional Applications & Engineering Value

This heavy-duty extra wide hex nut delivers exceptional performance in demanding industrial environments where corrosion resistance and mechanical reliability are critical. The 316 Stainless Steel composition provides superior protection against chemical exposure, saltwater corrosion, and extreme temperatures, making it ideal for marine equipment, chemical processing plants, and offshore installations. The UNC coarse thread design ensures rapid assembly and disassembly while maintaining secure fastening under vibration and dynamic loads. With its extra wide hex profile, this nut offers improved wrench engagement and torque capability, reducing the risk of rounding during high-torque applications. The Class 2B thread fit guarantees consistent performance across multiple installations, providing engineers with reliable, repeatable fastening solutions for structural connections, machinery assembly, and heavy equipment maintenance.

Specification Summary & Compliance

This hex nut features precision 1 1/4"-7 UNC coarse threads with Class 2B thread fit tolerance for reliable engagement. Manufactured to inch system standards with external hex drive and right-hand thread direction. Dimensions include 2" width and 1 7/32" height for optimal load distribution. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory adherence for industrial applications worldwide.