Multi-piece coaxial plug connector with variably configurable interface geometry

A coaxial plug connector, comprising:

• a cable portion and an interface portion,
• wherein the cable portion has an outer cable contact, a cable insulator and an elongated inner cable contact, the cable insulator is arranged in the outer cable contact, the inner cable contact is spaced apart from the outer cable contact by the cable insulator, and the inner cable contact is to be electrically connected to a cable;
• wherein the interface portion comprises an outer interface contact, an interface insulator and an elongated inner interface contact, the interface insulator is arranged in the outer interface contact and the inner interface contact is spaced apart from the outer interface contact by the interface insulator,
• wherein the inner interface contact is attached to the cable insulator such that fixation in a longitudinal direction of the inner interface contact within the coaxial plug connector is achieved predominantly by at least one of form-fitting and force-fitting interaction between the inner interface contact and the cable insulator.