S-90477A123 M12 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced Load Distribution - The 28.6mm flange diameter and 5.6mm thickness spread clamping force over a wider area, reducing surface pressure and preventing material damage in assembled components.
• Superior Corrosion Resistance - Black-oxide steel finish provides durable protection against rust and oxidation, extending service life in harsh industrial environments.
• Precision Thread Engagement - Class 6H thread fit ensures consistent, reliable mating with bolts, minimizing vibration-induced loosening and maintaining joint integrity.
• Optimized for High-Vibration Applications - Coarse M12 x 1.75mm right-hand threading combined with rotating performance properties maintains secure fastening under dynamic loads and rotational stress.
• Streamlined Installation - External hex drive with 22mm width offers excellent tool accessibility and torque application, speeding up assembly while reducing installation effort.
• Regulatory Compliance Assurance - RoHS 3 (2015/863/EU) compliance with exemption 6(a) meets international environmental standards for industrial use without compromising mechanical performance.
• Versatile Metric Compatibility - Standard metric threading ensures seamless integration with existing M12 bolt systems across global equipment and machinery platforms.

Professional Applications & Engineering Value

This black-oxide steel flange nut delivers critical engineering solutions where vibration resistance and load distribution are paramount. The integrated 28.6mm flange acts as a built-in washer, eliminating the need for separate components while providing superior bearing surface contact. This design proves invaluable in heavy-duty industrial applications including machinery assembly, automotive systems, and structural frameworks where rotating performance under stress is essential. The M12 coarse threading with 1.75mm pitch ensures rapid installation and reliable performance in high-vibration environments, while the Class 6H thread fit maintains precise tolerances for consistent clamping force. The external hex drive configuration accommodates standard tools for efficient maintenance and disassembly cycles, making it ideal for equipment requiring periodic service.

Specification Summary & Compliance

This metric flange nut features precise Class 6H thread fit per ISO standards with M12 x 1.75mm coarse right-hand threading. Critical dimensions include 22mm width across flats, 18.3mm height, 28.6mm flange diameter, and 5.6mm flange thickness. Manufactured from steel with black-oxide finish, the component is fully RoHS 3 (2015/863/EU) compliant with exemption 6(a) for lead as an alloying element in steel, ensuring adherence to international environmental regulations while maintaining optimal mechanical properties for industrial applications.