Abstract: A snap-in connection, especially a hub cap for wheels of passenger motor vehicles which is adapted to be fastened by the use of a force fit, which covers at least the wheel center, which is elastically deformable and which includes an edge that engages in the installed position under a collar of the wheel fastening bolt heads; the hub cap is thereby provided with material for a detent-engagement in the force-engaging plane of the detents but has a shape differing from the circular shape, whereby a relatively large lever arm is formed between the connecting lines of the points of engagement of the detent-points and the periphery which reduces the spring rate.