To provide a threaded fastener capable of significantly improving maximum fastening torque and holding force which is unlikely to loosen, a manufacturing method of a male threaded fastener and rolled dies.
In the threaded fastener, a follow side flank angle β of the male screw part 5 or a female screw part is set to be zero or a negative angle or a positive angle not larger than one third of a lead angle or a positive angle not larger than 4°. In the case of manufacturing the male threaded fastener 1 of the threaded fastener with the male screw part 5, a blank is provided between a plurality of rolled dies of which follow side flank angle of a thread forming groove is set to be zero or a negative angle or a positive angle not larger than one third of the lead angle or a positive angle not larger than 4°, the blank is rolled between the rolled dies and a thread 8 of the male screw part 5 is formed by rolling.