LOCK FOR PLUG-IN CONNECTOR

A plug-in connector part connectable to a mating connector part so as to form a plug-in connection includes: a housing; and an elastically deformable locking component embodied separately from the housing, which reversibly locks to a locking contour of the mating connector part during a creation of the plug-in connection. The locking component is at least partially arranged in the housing of the plug-in connector part and has a section that is curved around a longitudinal axis of the plug-in connector part, which is parallel to the plug-in direction, and has at least one locking region and at least one unlocking region. The locking component is prestressed in a closed position and is elastically radially outwardly expandable into an open position in the locking region by an action of a radially inwardly oriented force on the unlocking region.