A coaxial plug connector, comprising at least one electrically conductive inner conductor, an electrically conductive outer conductor spaced apart from the at least one inner conductor and disposed around the at least one inner conductor, at least one sleeve, which is made of an insulating plastic, wherein the inner conductor is disposed on an inside circumferential surface of the sleeve, wherein the outer conductor is disposed on an outside circumferential surface of the sleeve, wherein the coaxial plug connector is single-piece and sleeve-like.