A coaxial connector junction includes first and second coaxial connectors. The first coaxial connector includes: a first central conductor extension; a first outer conductor extension spaced apart from and circumferentially surrounding the first central conductor extension; and a first dielectric spacer interposed between the first central conductor extension and the first outer conductor extension. The second coaxial connector includes: a second central conductor extension; a second outer conductor extension spaced apart from and circumferentially surrounding the second central conductor extension; and a second dielectric spacer interposed between the second central conductor extension and the second outer conductor extension. Each of the central conductor extensions and the outer conductor extensions has circular symmetry about the longitudinal axis, such that electrical properties of the engaged first and second coaxial connectors are substantially the same irrespective of the relative orientations of the first and second coaxial connectors about the longitudinal axis.