16 forms a circumferential outer collar the outer collar has two throughgoing passages 20 20 u2032 which are located diametrically opposite to one another in a peripheral direction the throughgoing passages 20 21 in the outer collar are arranged in peripheral direction between two diametrically opposite guiding jaws 21 21 u2032 which have a reduced diameter relative to the remaining peripheral region of the outer collar the guiding jaw 21 21 u2032 are formed as cylinder jacket segments arranged at the same radius a region located in peripheral direction between this cylinder jacket 7 has a corresponding throughgoing passage 20 20 u2032 and is formed as a cylindrical jacket segment with a greater radius than the guiding jaws 21 21 u2032 the outer collar is therefore defined by two pairs of the cylindrical jacket segments of two different inner radii an end 22 of the housing 11 which faces away from the plug 13 is provided for receiving a pressure medium conduit while the opening 15 of the housing 11 serves as a flow passage for the pressure medium a radial circumferential groove 23 is provided at the coupling side end 17 of the housing 11 on the outer wall of the tubular portion 14 it receives the o sealing ring 12 the plug 13 of the plug connection device 10 has a tube 24 with an inner diameter substantially corresponding to the outer diameter of the associated tubular portion 14 of the housing 11 therefore the tube 24 of the plug 13.