Flange nut, abbreviated as hexagonal nut with flange, is another member of the nut family and a form of nut. A hexagonal nut with a flange can also be called a hexagonal nut with a disc, referring to a hexagonal nut with a large disc.

　　Generally speaking, this large disk is toothed, so why do you need a flange? Why do flanges need teeth on them? Let me briefly say:

　　1. The flange is used to increase the force area of the nut and receiving surface. We all know that under constant pressure, the larger the force area, the smaller the pressure on the force surface, and the greater the stress on the longitudinal and transverse nuts. This not only prevents damage caused by excessive pressure on the flange nut contact surface, but also plays a role in preventing loosening and slipping.

　　2. The teeth on the flange surface of the flange nut enhance the anti loosening effect of the flange nut, playing a certain anti vibration effect, so that the connection with the flange nut will not loosen during movement and high vibration, increasing safety and firmness.