The toll has a tool shank that is provided with a working portion that is provided in the periphery of the milling cutter. The screw thread cutting surface on the tooth (2) is provided with a cutting edge (5). The cutting edge is spaced from a guide support bar (6) whose diameter is smaller than that of the cutting edge. A concave or otherwise-shaped discharge space (9) is formed between the cutting edge and the guide support bar.
