Coaxial connecting devices used for transmitting high frequency electrical signals having two connector elements of generally cylindrical profile, and wherein each of the connector elements has an inner conductor, an insulator, and an outer conductor. In one of the two connector elements that may be of a male or a female orientation has two canted coil spring contacts where at least one of a first spring contact can be retained within at least one first spring groove within a second inner conductor and at least one of a second spring contact is retained within at least one second spring groove within a second outer conductor. The at least one second spring contact can be used as a simultaneous EMI shielding contact and latching, locking, or both latching and locking device.