Abstract: A method produces an assembly unit containing an assembly part having a bore and a sleeve which has a sleeve shaft. The sleeve has a terminal flange that overhangs the sleeve shaft toward the outside, and the sleeve shaft is plugged into the bore. The flange bears against the outer side of the assembly part. A gap between the sleeve and the assembly part is filled with an insulating compound. To produce the assembly unit, the sleeve shaft of a sleeve blank, the flange of which has a preassembly form such that an outer rim of the flange extends in a plane that extends at right angles to the longitudinal center axis of the sleeve shaft such that the flange underside is concave, is plugged into the bore. The sleeve blank deforms such that the insulating compound located between the flange and the assembly part is displaced into the gap.