A contact system, - having a contact device and a further contact device, - wherein the contact device has a first coaxial contact unit and a first contact housing, - wherein the further contact device has a second contact housing and a second coaxial contact unit, - wherein the first coaxial contact unit has a first inner contact and a first outer contact arranged circumferentially in relation to the first inner contact, - wherein the first outer contact is arranged spaced apart from and coaxially, with regard to a contact axis, to the first inner contact, - wherein the first contact housing and the first coaxial contact unit are connected to one another, - wherein the first coaxial contact unit and the second coaxial contact unit engage in one another and are electrically connected to one another, - wherein the first contact housing has a first encoding unit, - wherein the first encoding unit is arranged adjacent to the first outer contact of the first coaxial contact unit and has a first riveting means, - characterized in that the first riveting means has a first head section and a first shaft section connected to the first head section, - wherein the first shaft section engages through at least one first section of a first receptacle and sets a positioning of the first contact housing relative to a second contact housing of the contact system, - wherein the first head section protrudes laterally with a first outer circumferential side over a second outer circumferential side of the first shaft section, - wherein the first head section engages behind the second contact housing at the first receptacle at least in sections, - wherein the first head section and the second contact housing are riveted. - having a contact device and a further contact device, - wherein the contact device has a first coaxial contact unit and a first contact housing, - wherein the further contact device has a second contact housing and a second coaxial contact unit, - wherein the first coaxial contact unit has a first inner contact and a first outer contact arranged circumferentially in relation to the first inner contact, - wherein the first outer contact is arranged spaced apart from and coaxially, with regard to a contact axis, to the first inner contact, - wherein the first contact housing and the first coaxial contact unit are connected to one another, - wherein the first coaxial contact unit and the second coaxial contact unit engage in one another and are electrically connected to one another, - wherein the first contact housing has a first encoding unit, - wherein the first encoding unit is arranged adjacent to the first outer contact of the first coaxial contact unit and has a first riveting means, - characterized in that the first riveting means has a first head section and a first shaft section connected to the first head section, - wherein the first shaft section engages through at least one first section of a first receptacle and sets a positioning of the first contact housing relative to a second contact housing of the contact system, - wherein the first head section protrudes laterally with a first outer circumferential side over a second outer circumferential side of the first shaft section, - wherein the first head section engages behind the second contact housing at the first receptacle at least in sections, - wherein the first head section and the second contact housing are riveted.