S-90499A031 3/8"-16 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Grade 8 strength rating, ensuring reliable performance in high-stress industrial environments.
• Superior thread engagement due to Class 2B fit, reducing the risk of cross-threading and ensuring smooth assembly.
• Enhanced durability and corrosion resistance from high-quality steel construction, extending service life in demanding applications.
• Optimized for quick installation with standard external hex drive and coarse UNC threads, saving time and labor costs.
• Wide compatibility with 3/8"-16 UNC coarse threaded bolts, making it versatile for various machinery and equipment.
• Compliance with environmental regulations including RoHS 3 and REACH, ensuring safe use in regulated industries.
• Consistent dimensional accuracy with 9/16" width and 21/64" height, providing reliable fit and repeatable performance.

Professional Applications & Engineering Value

This Grade 8 steel hex nut is engineered to address critical challenges in heavy-duty industrial settings, where fastener failure can lead to costly downtime and safety hazards. The UNC coarse thread design ensures rapid assembly and disassembly, even in vibration-prone environments, while the external hex drive allows for high torque application with standard tools. Made from robust steel material, it resists deformation under extreme loads, making it ideal for construction equipment, automotive assemblies, and machinery frames. The Class 2B thread fit guarantees precise mating with corresponding bolts, minimizing play and enhancing structural integrity. Its compliance with RoHS and REACH standards further supports use in regulated sectors, providing peace of mind for engineers and procurement specialists.

Specification Summary & Compliance

This hex nut adheres to inch system measurements with a thread size of 3/8"-16 UNC and Class 2B thread fit for consistent dimensional accuracy. It meets Grade 8 strength specifications, ensuring high tensile and yield strength. The product is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for industrial applications requiring environmental and safety standards.