Abstract: There is disclosed in the present application, a coaxial connector for microwave applications including an external conductive shell, a central conductor and an insulator of polytetrafluoroethylene (Teflon) or other non-conductive synthetic resin, interposed between the shell and the central conductor. The interior of the shell and the exterior of the central conductor are both roughened to provide an improved bond for a coat of epoxy resin adhesive which secures the shell and conductor to the insulator. For providing a superior anchor to the insulator, it is acid etched to roughen its epoxy contacting surfaces.