S-91903A032 3/8"-16 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional torque resistance due to the extra wide profile, preventing rounding during high-tension applications
• Superior strength and reliability from Grade 5 steel construction, suitable for demanding industrial environments
• Enhanced corrosion resistance with zinc plating, extending service life in harsh conditions
• Easy and quick installation with UNC coarse threading and Class 2B fit, reducing assembly time and errors
• Broad compatibility with standard 3/8"-16 UNC bolts, ensuring seamless integration into existing systems
• Secure fastening performance using an external hex drive, allowing for standard tool use and consistent tightening
• Compliance with environmental regulations including RoHS 3 and REACH, meeting global safety and sustainability standards

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel hex nut is engineered to address common industrial challenges such as vibration loosening and corrosion-induced failure. Its extra wide profile provides a larger bearing surface, distributing load evenly and enhancing torque resistance in heavy machinery, construction, and automotive assemblies. The UNC coarse thread and Class 2B threading ensure reliable engagement with mating components, reducing the risk of cross-threading and enabling faster installation in high-volume production lines. Made from robust zinc-plated steel, it offers lasting protection against rust and wear, making it ideal for outdoor equipment, structural frameworks, and other applications where durability and corrosion resistance are critical. By combining high-strength materials with precise engineering, this nut delivers consistent performance in rigorous industrial fastening scenarios.

Specification Summary & Compliance

This hex nut features a 3/8"-16 UNC coarse thread with Class 2B thread fit, ensuring dimensional accuracy and reliable mating with standard bolts. Manufactured from Grade 5 steel with a zinc-plated finish, it adheres to industry standards for strength and corrosion protection. The product is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for use in various industrial and commercial applications without hazardous substances.