To obtain a screwed assembly with a high load capacity for sheet metal parts with a thickness of 0.8 mm or more, made of steel, light alloys, non-ferrous metals (up to a hardness of HRB 80). The anchoring in the part takes place under pressure from the press. The ideal pressure for fitting is determined by tests, depending on the type of sheet metal, values given for example, in the choice of the press. To obtain maximum anchoring, the dimensions and tolerances of the rough hole must be observed.