An insulator supporting an inner contact coaxial within a connector body bore of a connector for coaxial cable with a solid outer conductor is formed as a monolithic body with an inner contact bore extending between a connector end and a cable end. The inner contact bore is dimensioned to receive the inner contact. An outer diameter of the insulator at the connector end is configured to mate with the connector body bore of the coaxial cable connector. A plurality of spring fingers extends from the cable end of the insulator. A distal end of the spring fingers each is provided with a ramp surface, whereby during connector to cable assembly, the solid outer conductor contacts the spring fingers along the ramp surface(s), deflecting the spring fingers inward to increase inward bias upon a spring basket of the inner contact.