DISC-LOCK anti-loosening nut is composed of two parts, each part has a staggered cam. Because the slope angle of the internal wedge design is larger than the angle of the nut of the bolt, this combination will closely bite into a whole. When vibration occurs, the uplift part of DISC-LOCK anti-loosening nut dislocates with each other, resulting in lifting tension, thus reaching the goal. To perfect the anti loosening effect.