A plug-type connector for hose and/or pipe connections, including - a coupling part having a receiving opening into which a plug part (S) with a plug shaft (S1), which comprises a collar (S2), is insertable in a plug-in direction (SR), and - a radially slotted retaining clip , which is resiliently elastic at least in regions, comprises at least two latching arms , is pre-assemblable on the coupling part and in a pre-assembly position assumes an insertion position (EP) for the plug part (S) in which the plug part (S) is insertable through the retaining clip into the receiving opening , and wherein the retaining clip in an assembly position assumes a retaining position (HP) for the inserted plug part (S), in which the plug part (S) with its collar (S2) is blockable in the receiving opening in a positive locking manner by means of the retaining clip against being pulled out, whereby the basic shape of the retaining clip - when viewed in the direction of the longitudinal axis (X-X) - is realized in a U-shaped manner, wherein the legs of the U realize two pairs (15a/15b, 16a/16b) of latching arms which are located diametrically opposite one another and are arranged one behind the other in the axial direction (X-X), are each separated from one another by a slot and are resiliently elastic in both the radial and the axial (X-X) direction, wherein the first pair (15a/15b) of latching arms blocks the plug part (S) in the retaining position (HP) in a positive locking manner against being pulled out and the second pair (16a/16b) of latching arms holds the retaining clip in a captive manner in the coupling part both in the pre-assembly position and in the assembly position characterized in that the first pair (15a/15b) of latching arms is located on a side of the retaining clip that faces the plug-in direction (SR) of the plug part (S) when the retaining clip is situated in the insertion position (EP) and in the retaining position (HP) in the coupling part , wherein inclined surfaces , which diverge in opposition to the plug-in direction (SR) of the plug part (S) for interaction with the collar (S2) of the plug part (S), are situated in each case on a side of the latching arms which faces the plug-in direction (SR) of the plug part (S), whereby the inclined surfaces are each formed from at least two part-surfaces (T1, T2) at various divergence angles (μ1, μ2) in opposition to the plug-in direction (SR) of the plug part (S), whereby the legs of the divergence angles (μ1, μ2) are formed on the one hand in each case by the longitudinal axis (X-X) of the plug-type connector and, on the other hand, in each case by a straight line (G1, G2) through the respective center following the inclination of the surface (T1, T2), whereby in each case a first part-surface (T1), which is situated in the vicinity of the free end of the respective latching arm , comprises a divergence angle (μ1) that is smaller in each case than the divergence angle (μ2) of a second part-surface (T2) which is situated in each case in a central region of the latching arm . - a coupling part having a receiving opening into which a plug part (S) with a plug shaft (S1), which comprises a collar (S2), is insertable in a plug-in direction (SR), and - a radially slotted retaining clip , which is resiliently elastic at least in regions, comprises at least two latching arms , is pre-assemblable on the coupling part and in a pre-assembly position assumes an insertion position (EP) for the plug part (S) in which the plug part (S) is insertable through the retaining clip into the receiving opening , and wherein the retaining clip in an assembly position assumes a retaining position (HP) for the inserted plug part (S), in which the plug part (S) with its collar (S2) is blockable in the receiving opening in a positive locking manner by means of the retaining clip against being pulled out, <EOS>