The PS-3K stud welding gun allows the accurate welding of studs and pins with ignition tip as per DIN EN ISO 13918 by using spring pressure. No auxiliary aids are required. This welding gun has been especially designed for use on workpieces with problematical surfaces. The sturdy and ergonomically shaped PS-3K stud welding gun is of a particularly durable design and allows stud welded joints of unequalled welding quality to be produced especially when welding large stud diameters.