S-91851A665 1 1/2"-6 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Enhanced load distribution from the extra-wide thin profile design, reducing surface pressure and material fatigue
• Quick and reliable installation with coarse UNC threading and Class 2B fit for faster assembly and consistent performance
• High torque capability through the external hex drive, ensuring secure fastening in heavy-duty applications
• Dimensional precision with inch measurement system, guaranteeing compatibility with standard UNC threaded components
• Long-term durability with RoHS 3 and REACH compliance, meeting strict environmental and safety regulations
• Versatile right-hand threading for standard industrial use, simplifying procurement and replacement processes

Professional Applications & Engineering Value

This 1 1/2"-6 UNC hex nut is engineered to address critical challenges in demanding industrial settings. The 18-8 Stainless Steel material provides exceptional resistance to rust and chemical exposure, making it suitable for outdoor machinery, marine equipment, and chemical processing plants where corrosion resistance is paramount. Its extra-wide thin profile distributes clamping force more evenly, preventing joint loosening under vibration and heavy loads—common in construction, transportation, and heavy machinery applications. The coarse thread spacing and Class 2B thread fit ensure rapid assembly with minimal cross-threading risks, enhancing productivity in high-volume manufacturing and maintenance operations. This combination of durability, precision, and regulatory compliance delivers reliable performance in industrial hex nut applications requiring long-term operational integrity.

Specification Summary & Compliance

This hex nut adheres to UNC thread standards with a 1 1/2"-6 coarse thread and Class 2B thread fit for consistent dimensional accuracy. Manufactured from 18-8 Stainless Steel with an external hex drive, it meets industry specifications for inch-system fasteners. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial supply chains.