Abstract: A filter sleeve (15) is soldered within a coaxial assembly (10). The outer diameter of the filter sleeve (15) is soldered to an outer member (12) comprising a ground shell (2), and the inner diameter of the filter sleeve (15) is soldered to an inner member comprising a contact terminal (11). The contact terminal (11), filter sleeve (15) and ground shell (2) are arranged concentrically with respect to each other. With this structure, excellent mechanical rigidity and electrical contact are assured. Alternates of the preferred embodiment are disclosed. An improved method is also disclosed for manufacturing convenience in a cost effective manner.