Wheel bolt assembly of rear drive axle of automobile

The utility model discloses a wheel bolt assembly of a rear drive axle of an automobile and belongs to the manufacturing technology field of the rear drive axle of the automobile. The wheel bolt assembly of the rear drive axle of the automobile mainly solves the problem of frequent bulk fracture of wheel bolts of the existing EQ153 rear drive axle when being used for an engineering van. The wheel bolt assembly of the rear drive axle of the automobile is characterized by comprising a wheel bolt, a wheel nut, a gasket and a fastening nut, threads at one end of the wheel bolt are M20*1.5 while threads at the other end of the wheel bolt are M30*2, and an anti-rotation lug boss is designed at the middle of the wheel bolt; the diameter of the first bolt bar section of the wheel bolt matched with a rim is 30 millimeters, the corresponding thread is M30*2, and the inner end of the bolt bar is provided with a locating step surface matched with the rim; the diameter of the part of the wheel bolt matched with a hub is 2