A camshaft adjuster including a stator and a rotor, wherein the stator and the rotor are arranged such as to be able to rotate relative to one another, the camshaft adjuster has a cover which is connected to the stator or to the rotor such as to rotate therewith, and wherein the stator an/or the rotor and/or the cover has a through-opening which is at least partially penetrated by a screw, wherein the camshaft adjuster has a threaded bushing which is inserted in the through-opening and which includes a tubular piece having an internal screw thread and a radial collar arranged at one end of the tubular piece, wherein the screw engages in the threaded bushing, the threaded bushing has a bearing face which is arranged in the transition from the radial collar to the tubular piece and which is oriented at an angle to a longitudinal axis of the tubular piece, and the threaded bushing bears with the bearing face against a correspondingly shaped counterface of the stator an/or of the rotor and/or of the cover.