








Flange nuts, often referred to by other names such as washer nuts, serrated nuts, or hexagonal flange nuts, feature a distinct wide flange at one end, functioning as an integrated washer. Here is an in-depth exploration of the extraordinary flange nut:
1. Structure and Design: Flange nuts typically exhibit a hexagonal shape and are crafted from resilient hardened steel, often enhanced by a galvanized surface treatment. The broad flange significantly increases the contact area with the workpiece, effectively distributing the nut's pressure across a larger surface, minimizing potential damage to components, and boosting connection stability.
2. Materials and Specifications: Flange nuts are manufactured from a variety of materials, including A3 low carbon steel, robust 35K high-speed steel wire, and sturdy 45 steel, with hardness levels ranging impressively from level 4 to level 12. Common specifications are M5, M6, M8, M10, M12, and M16, with specifications above M20 being rare, typically featuring flat flanges without teeth.
3. Features and Uses: Designed with anti-slip tooth patterns, flange nuts enhance friction and resist loosening. They are ideal for applications demanding high tightness and stability, such as pipeline connections, securing metal plates, elevator manufacturing, and marine engineering. The serrated flange offers an additional locking mechanism to prevent fastener loosening due to vibration.
4. Advantages: The flange nut boasts adjustability and ease of disassembly post-installation, offering impressive flexibility. They cleverly reduce preload force by harnessing remaining rotational resistance, ensuring a consistently strong fastening effect.
In summary, flange nuts are indispensable in scenarios demanding exceptional tightening force and stability, thanks to their innovative design and outstanding performance capabilities.