Spacer nut for connecting spaced-apart fastening portions of two components, having a threaded part forming an internal thread for a screw, having an intermediate piece forming a thread and a through-passage opening, wherein the threaded part and the intermediate piece can be, or are, connected to one another such that an accommodating space for the fastening portion of a first component is formed between them and the internal thread and the through-passage opening in the intermediate piece are arranged in alignment, and having a spacer piece with a thread, which can be screwed together with the thread of the intermediate piece, a through-passage opening, which is in alignment with the internal thread, and a contact surface, which incorporates the one end of the through-passage opening of the spacer piece and is provided for abutment against the fastening portion of the second component.