Abstract: A clutch mechanism suitable for automotive vehicles comprises a pre-assembled pressure plate/diaphragm spring/clutch cover assembly. This assembly is fixed to the end of a driving shaft by means of the clutch cover and bolts which pass through openings formed for this purpose in the pressure plate. A friction disk is mounted elastically on a hub on a driven shaft. It is gripped between the pressure plate and a reaction plate, the latter attached to the clutch cover by means of screws which have their heads welded to the cover. A clutch operating pin acts directly on the center of the pressure plate which is dished for the purposes of oil recovery and evacuation.