A coaxial connector having precise matched impedance characteristics which is suitable for use with coaxial cable having a very soft dielectric core. A slotted bushing is fit over the core of the cable. The bushing is inserted into the rear of the coaxial contact assembly. A flange on the front of the bushing snaps into a recess in the wall of the coaxial contact assembly to provide a positive interlock and establish an optimum electrical path in the outer conductor circuit for high frequency performance. A sleeve is crimped down around the outer conductor of the cable which is laid over an exposed, rigid rear portion of the bushing and the rear of the coaxial contact assembly, neither of which is deformed during the crimping operation.