PURPOSE: To easily assemble an electrical part without anti-breakdown voltage failure by arranging the electrical part such that a plug contact is held by an insulating housing and the outermost periphery of the housing at a wire side is protruded from an open end of a guide case.
CONSTITUTION: A housing 4 is inserted into a guide case 8 at an open end 10 side. A fixing shoulder member 7 of the housing 4 is held by a stopper 14 and a lance 13. An outermost periphery 5 of the housing 4 at the side of wires 18a, 18b and 19 is arranged to protrude, by size A, from the open end 10 of the guide case 8, where the housing 4 is inserted. An assembled plug contact 2 at the side where the wires 18a, 18b and 19 are compressed, the outermost periphery 5 of the housing 4, a part of the guide case 8, a coaxial cord 17 and a cord 15 are inserted into a cover 20 of an insulating material, to be molded.