S-93083A107 3/8"-16 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through serrated locking technology that bites into mating surfaces, preventing loosening under dynamic loads
• Enhanced corrosion protection with black-oxide steel coating that withstands harsh industrial environments
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and easy assembly
• Integrated flange design eliminates need for separate washers, distributing load over wider surface area
• Coarse UNC threading provides faster installation and reduced cross-threading risk in industrial applications
• Standard external hex drive allows for conventional tooling and straightforward torque application
• Comprehensive compliance with REACH and RoHS 3 environmental standards for global manufacturing requirements

Professional Applications & Engineering Value

This heavy-duty flange lock nut delivers exceptional performance in demanding applications where vibration resistance is critical. The black-oxide steel construction provides superior corrosion resistance compared to standard finishes, while the serrated locking mechanism creates permanent friction that prevents back-off in machinery, automotive, and structural applications. The integrated 3/4" flange diameter acts as a built-in washer, distributing clamping force effectively and reducing surface pressure. With UNC coarse threading and Class 2B thread fit, this nut offers reliable engagement in high-vibration environments such as power transmission systems, heavy equipment, and industrial machinery where secure fastening is non-negotiable.

Specification Summary & Compliance

This flange lock nut features 3/8"-16 UNC coarse threading with Class 2B thread fit for consistent engagement and assembly. The external hex drive (9/16" width) and 11/32" height provide standard tool compatibility. Manufacturing complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental directives, ensuring suitability for industrial applications with strict regulatory requirements. The right-hand thread direction and serrated locking type deliver reliable performance in vibration-prone environments.