Method for producing a nut, screw tap for carrying out said method and nut produced according to said method

Method for producing a nut that has a drive area (2) and a clamping area (3), which are produced as one piece, whereby the nut has a bore (B) that is fully engaged in the clamping area (3) and the drive area (2) with an at least partially cylindrical threaded section (7) in the drive area (2), and an at least partially conical threaded section (8) in the clamping area (3), characterized in that the bore (B) fully engaged in the clamping area (3) and in the drive area (2) is produced as a cylindrical bore (B), and that a screw tap (15) is screwed into this cylindrical bore (B) up to a predetermined position. The screw tap (15) has in axial direction, viewed from its front side, a centering cutting section (17), and a subsequently joining cutting section (19) that are arranged next to each other for the production of the conical internal threaded section (8) of the clamping area (3), and a subsequently joining cutting section (21) for the production of the cylindrical internal threaded section (7) in the drive area (2), whereby the cutting section (21) has teeth (22) in the drive area (2) for the production of the cylindrical internal threaded section (7), which extend in longitudinal direction (L), the cutting section (19) has teeth (26) in the clamping area (3) for the production of the conical internal threaded sections (8) that extend at a first angle (al) laterally to the longitudinal direction (L), and the centering cutting section (17) has teeth (30) that extend at a second angle (a2) laterally to the longitudinal direction (L), whereby the screw tap (15) is screwed into the bore (B) up to a predetermined position in a first step. The teeth (22) of the cutting section (21) are mapped in the drive area (2) for the production of the cylindrical internal threaded section (7), and the teeth (26) of the cutting section (19) are mapped in the drive area (2), or in the clamping area (3), respectively, for the production of the conical internal threaded section (8) of the clamping area (3), whereby the screw tap (15) is turned back from the bore (B) of the nut in a subsequent step.