Abstract: A soldering iron comprises a tube and a soldering tip slipped onto the front or outer end of the tube with a close sliding fit. The soldering tip is fastened axially by means of a spring element which is fastened to an inner end of the tube. In order to secure the soldering tip from rotating, the diameter of the front or outer section of the tube is made smaller than the diameter of the far or inner end section of the tube and the soldering tip is connected form-fittingly with the tube by a web formed in the inner tube which engages in a slot of the outer tube.