What is a wheel nut?

The wheel nut is a special nut used to fix the outer hub of the car. Due to the uncertainty of car nuts, there is no national standard for car nuts, but the general types are roughly the same as ordinary hexagonal nuts, and there are also various types in the middle of M12-M42. Compared with ordinary hexagonal nuts, hub nuts are generally thicker than hexagonal GB nuts of the same specification, and generally have fine pitch. 

The pitch is also approximately 1.5mm and 2.0mm. The shape is the same as the hex nut. Equilateral hexagon, but there will be a taper at one end of the nut, and some tapers will have a step inside the nylon washer to lock it, and some have no steps on the side! And some hub nuts have flanges on the tapered part. Generally, there are flanges on the outside, and there will be a step inside to place nylon washers. Generally, the hexagonal nuts are tapered.