A plug-in nut has an outer body and an inner body which is mounted in the outer body such that it can be displaced in a rotationally fixed manner. On the inner body, rear-latching lugs are formed on spring arms, which rear-latching lugs fix an attachment component on a carrier part in a variable position of the inner body in relation to the outer body, which variable position is assumed so as to compensate for tolerances, as soon as a screw has been screwed into a screw receiving space of the inner body. This results in a secure hold with very simple handling.