A connector assembly comprising: a center contact configured to be terminated to a center conductor of a cable ; a dielectric holding the center contact ; an outer contact surrounding the dielectric and the center contact , the outer contact having a mating segment extending from a mating end , a terminating segment extending from a cable end , and a middle segment between the mating and terminating segments , the terminating segment configured to be terminated to a braid of the cable , the middle segment having a diameter that is less than the respective diameters of the mating and terminating segments; and a cavity insert surrounding the middle segment of the outer contact , the connector assembly is characterized in that the cavity insert is barrel-shaped, and includes a receiving shell forming a portion of a perimeter of the cavity insert and a closing shell forming the remaining portion of the perimeter of the cavity insert that are joined together at an interface, the cavity insert having a front end , a rear end , and an inner surface that defines a channel through the cavity insert between the front and rear ends , the middle segment of the outer contact received in the channel , the inner surface having a diameter that is less than the respective diameters of the mating and terminating segments of the outer contact , wherein the outer contact is stepped along its length to define a first shoulder and a second shoulder , the first shoulder separates the mating segment from the middle segment , the second shoulder separates the middle segment from the terminating segment , the first shoulder of the outer contact engages a flared front end of the cavity insert and the second shoulder engages a flared rear end of the cavity insert to hold the axial position of the outer contact relative to the cavity insert . a center contact configured to be terminated to a center conductor of a cable ; a dielectric holding the center contact ; an outer contact surrounding the dielectric and the center contact , the outer contact having a mating segment extending from a mating end , a terminating segment extending from a cable end , and a middle segment between the mating and terminating segments , the terminating segment configured to be terminated to a braid of the cable , the middle segment having a diameter that is less than the respective diameters of the mating and terminating segments; and a cavity insert surrounding the middle segment of the outer contact , the connector assembly is characterized in that the cavity insert is barrel-shaped, and includes a receiving shell forming a portion of a perimeter of the cavity insert and a closing shell forming the remaining portion of the perimeter of the cavity insert that are joined together at an interface, the cavity insert having a front end , a rear end , and an inner surface that defines a channel through the cavity insert between the front and rear ends , the middle segment of the outer contact received in the channel , the inner surface having a diameter that is less than the respective diameters of the mating and terminating segments of the outer contact , wherein the outer contact is stepped along its length to define a first shoulder and a second shoulder , the first shoulder separates the mating segment from the middle segment , the second shoulder separates the middle segment from the terminating segment , the first shoulder of the outer contact engages a flared front end of the cavity insert and the second shoulder engages a flared rear end of the cavity insert to hold the axial position of the outer contact relative to the cavity insert . <EOS>