Abstract: A torch comprises inner parts carrying the welding current. The inner parts are enclosed by a nozzle, an intermediate member and an outer neck section. The intermediate member is connected to the outer neck section with a left handed internal screw and to the nozzle with a right handed external screw. The inner parts are surrounded by electrically insulating tubes for preventing an electrical breakthrough. At least an intermediate one of the insulating tubes is coated with a thermally conducting paste for providing good heat conduction between the outer and inner parts.