S-94831A730 5/8"-18 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through serrated locking technology that prevents loosening under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in harsh environments
• Secure fastening performance with Class 2B thread fit ensuring precise engagement and reliable torque transmission
• Integrated flange design eliminates need for separate washers while providing 1 9/32" distributed load bearing surface
• Fine thread configuration (UNF 5/8"-18) delivers higher clamping force and better tension control than coarse threads
• External hex drive compatibility with standard tools for easy installation and maintenance access
• Regulatory compliance assurance meeting both REACH and RoHS 3 environmental standards for global applications

Professional Applications & Engineering Value

This heavy-duty flange locknut addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and structural frameworks. The zinc-plated steel construction provides essential corrosion resistance while maintaining high tensile strength. The serrated locking mechanism beneath the integrated flange creates permanent friction against mating surfaces, effectively dampening harmonic vibrations that compromise standard fasteners. With its UNF fine thread configuration and Class 2B thread fit, this external hex nut delivers precise clamping force distribution across the 1 9/32" flange diameter, making it ideal for high-stress applications where reliability cannot be compromised. The combination of vibration resistance, environmental compliance, and mechanical durability makes this flange locknut particularly valuable for OEM manufacturing and maintenance operations requiring long-term fastening integrity.

Specification Summary & Compliance

Manufactured to UNF thread standards with Class 2B thread fit tolerance for consistent engagement. The external hex drive features a standard profile compatible with conventional wrenching tools. This flange locknut complies with REACH (EC 1907/2006) substance restrictions and RoHS 3 (2015/863/EU) directives, ensuring environmental regulatory adherence for international supply chains. The zinc-plated surface treatment provides corrosion protection while maintaining electrical conductivity for grounding applications.