A contact member includes, an outer conductor including a mating interface section that includes a front end of the outer conductor, a termination section including a rear end of the outer conductor, and a middle section therebetween joining the mating interface and termination sections; an inner conductor received in the mating interface section; and a protective insulator including a main portion received in the mating interface section of the outer conductor and supporting the inner conductor and including an end portion configured for closed entry mating. The end portion has an end face extending outside of the front end of the outer conductor.