S-90477A125 M20 Flange Nuts

Key Features & Benefits at a Glance

• Enhanced load distribution with a 44.5mm flange diameter, reducing surface pressure and preventing damage to connected materials.
• Superior corrosion resistance thanks to the black-oxide steel finish, extending service life in harsh industrial environments.
• Reliable thread engagement with Class 6H thread fit, ensuring consistent clamping force and vibration resistance.
• Optimized for rotating applications, providing secure fastening under dynamic loads without loosening.
• Easy installation and removal with an external hex drive (37mm width), compatible with standard tools for efficient maintenance.
• Durable coarse thread (M20x2.5) for quick assembly and reduced risk of cross-threading in heavy-duty uses.
• Compliance with RoHS 3 standards, meeting environmental regulations for safe use in various industries.

Professional Applications & Engineering Value

This M20 flange nut is engineered to address common challenges in rotating applications, such as machinery, automotive assemblies, and industrial equipment. The black-oxide steel construction offers excellent durability and corrosion resistance, minimizing maintenance needs in demanding environments. Its integrated 44.5mm flange distributes clamping force evenly, reducing the risk of surface damage and ensuring stable connections under high vibration. With a coarse thread pitch (2.5mm) and Class 6H thread fit, it provides reliable performance in heavy-duty settings, preventing loosening and enhancing safety. Ideal for sectors requiring robust, metric fasteners, this nut delivers long-term value by combining strength with ease of installation.

Specification Summary & Compliance

This flange nut adheres to metric system standards, with precise dimensions including a flange diameter of 44.5 mm, height of 28.6 mm, and thread size of M20x2.5 coarse pitch. It features a Class 6H thread fit for accurate tolerance and reliable performance. Manufactured from steel with a black-oxide finish, it complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead as an alloying element, ensuring environmental safety and suitability for industrial use.