A connector assembly for a coaxial cable with an inner conductor and a corrugated outer conductor. The connector assembly comprises an inner contact adapted to engage the end of the inner conductor of the coaxial cable, a body member in the form of a hollow cylinder with a threaded inside surface at one end, and an attachment nut in the form of a hollow cylinder with a threaded outside surface for threadingly engaging the threaded inside surface of the body member, and a threaded inside surface for threadingly engaging the corrugated outer conductor of the cable. The attachment nut also forms a barrel projecting longitudinally from one end of the threaded outer surface and along the corrugated outer conductor. The barrel has a non-circular inside surface with a minimum inside dimension at least as large as the maximum outside diameter of the outer conductor of the cable. A bushing engages the outer surface of the barrel and deforms the barrel into the outer conductor of the cable in response to telescoping advancement of the body member onto the attachment nut.