A high-voltage bushing includes an insulation member, an inner conductor that extends through the insulation member, and a fastening flange that is arranged externally on the insulation member. The high-voltage bushing additionally includes a retaining ring that is connected to the fastening flange, and the insulation member includes an outer projection that is arranged on the outer circumference and interlockingly cooperates with an inner projection on the retaining ring to counteract an axial force on the fastened high-voltage bushing.