Abstract: The device for connecting parts having holes with different center-to-center distances consists of a threaded connecting element, such as a bolt or a nut, and a bush whose internal diameter is greater than the diameter of the bolt shank or of a threaded shank associated to the the nut; if used for fitting vehicle wheels, a bolt may be inserted into the holes in the wheel, with the bush snapped onto the base of the bolt head from below, and the bolt then screwed into the corresponding threaded hole in the axle hub, the difference between the center-to-center distance of the holes in the wheel and that of the threaded holes in the vehicle axle hub being compensated by the play created by the difference between the diameter of the bush and that of the bolt.

Abstract: An assembly for supporting axles of different diameters in a wheel, in which the wheel has a hub with a bushing receiving portion having an interior surface of a first diameter. The bushing has a portion with an outer surface of a second diameter, somewhat smaller than the hub first diameter, to fit axially into the hub receiving portion and an axle receiving portion having an inner surface of a third diameter that accepts an axle of a corresponding diameter. The hub bushing receiving portion has a first seating on its interior surface and the bushing outer surface has a second seating. A fixing element in the bushing second seating expands radially of the bushing into the hub first seating when the bushing is inserted axially into the hub bushing receiving portion and locks the bushing to the hub.