Electric connection device comprising: A housing of a conductor connection socket formed in a housing wall for connecting an electric cable, which has an inner conductor and a concentric outer conductor - the conductor connection socket has an outer thread for producing a threaded connection to a counter thread which corresponds to the outer thread and which is formed in a thread bore of the housing wall of the housing - the blind hole base of the thread bore has a through-hole, through which the inner conductor of the cable is fed inside the housing, - the cable connection socket is designed with an inner bore which corresponds to the diameter of the outer conductor in order to be pushed onto the outer conductor of the cable, - in order to clamp the outer conductor a collet is arranged on the cable outlet side of the cable conductor connection socket which is supported against the blind hole base of the thread bore, - an inner conductor pin which is connected to the end of the inner conductor, characterized in that the collet is a metallic collet, the conductor connection socket has a blind hole bore enclosing the outer conductor on the cable outlet side which at least partially holds the collet, and the collet is supported on its faces against walls of the thread bores (5, 12) which are arranged perpendicularly to the axis of the through-hole of the housing wall. A housing of a conductor connection socket formed in a housing wall for connecting an electric cable, which has an inner conductor and a concentric outer conductor - the conductor connection socket has an outer thread for producing a threaded connection to a counter thread which corresponds to the outer thread and which is formed in a thread bore of the housing wall of the housing - the blind hole base of the thread bore has a through-hole, through which the inner conductor of the cable is fed inside the housing, - the cable connection socket is designed with an inner bore which corresponds to the diameter of the outer conductor in order to be pushed onto the outer conductor of the cable, - in order to clamp the outer conductor a collet is arranged on the cable outlet side of the cable conductor connection socket which is supported against the blind hole base of the thread bore, - an inner conductor pin which is connected to the end of the inner conductor, characterized in that the collet is a metallic collet, - the conductor connection socket has an outer thread for producing a threaded connection to a counter thread which corresponds to the outer thread and which is formed in a thread bore of the housing wall of the housing - the blind hole base of the thread bore has a through-hole, through which the inner conductor of the cable is fed inside the housing, - the cable connection socket is designed with an inner bore which corresponds to the diameter of the outer conductor in order to be pushed onto the outer conductor of the cable, - in order to clamp the outer conductor a collet is arranged on the cable outlet side of the cable conductor connection socket which is supported against the blind hole base of the thread bore, - an inner conductor pin which is connected to the end of the inner conductor, characterized in that the conductor connection socket has a blind hole bore enclosing the outer conductor on the cable outlet side which at least partially holds the collet, and the collet is supported on its faces against walls of the thread bores (5, 12) which are arranged perpendicularly to the axis of the through-hole of the housing wall.