S-90498A031 3/8"-16 ASME B18.2.2 Hex Nuts

Key Features & Benefits at a Glance

• Enhanced load distribution due to the extra wide profile, reducing surface pressure and preventing material damage
• Superior corrosion resistance from high-quality steel construction, ensuring longevity in harsh industrial environments
• Reliable thread engagement with Class 2B fit UNC coarse threads, minimizing cross-threading and enabling quick assembly
• High torque capability through the external hex drive design, allowing for secure tightening with standard tools
• Compliance with ASME B18.2.2 standards, guaranteeing dimensional accuracy and interchangeability for consistent performance
• Environmental safety assurance with RoHS 3 and REACH compliance, making them suitable for regulated industries
• Optimized for heavy-duty applications thanks to the right-hand coarse threading, providing strong vibration resistance

Professional Applications & Engineering Value

This 3/8"-16 UNC coarse thread hex nut is engineered to address common challenges in industrial fastening, such as vibration loosening and assembly inefficiencies. The extra wide profile distributes clamping force more evenly, reducing the risk of joint failure in heavy machinery, construction equipment, and automotive systems. Made from durable steel, it withstands high-stress conditions while the UNC coarse threads facilitate faster installation and disassembly, cutting down on maintenance time. Its external hex drive ensures compatibility with standard wrenches, streamlining operations in manufacturing and assembly lines. Ideal for applications requiring robust, ASME B18.2.2 compliant fasteners, this nut delivers reliable performance in sectors like oil and gas, where RoHS and REACH compliance is critical for environmental and safety standards.

Specification Summary & Compliance

This hex nut features precise dimensions: 3/8"-16 UNC coarse thread with a Class 2B thread fit for consistent engagement, and right-hand threading direction. It adheres to ASME B18.2.2 manufacturing specifications, ensuring dimensional accuracy in the inch system. The nut is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and suitable for global industrial use.