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 (240, 236), 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 (244, 248) 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 (250, 252), the middle segment of the outer contact received in the channel, the inner surface having a diameter that is less than the respective diameters (244, 248) of the mating and terminating segments (240, 236) 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 (240, 236), 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 (244, 248) 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 (250, 252), the middle segment of the outer contact received in the channel, the inner surface having a diameter that is less than the respective diameters (244, 248) of the mating and terminating segments (240, 236) 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.