Abstract: A bolt with braked unscrewing consists of a screw and a nut. The screw or nut includes, in the axial direction, at least three stepped portions of continuous thread, namely an introduction portion for introducing the screw into the nut, a braking portion and an intermediate portion connecting the introduction portion to the braking portion. The braking portion has a thread diameter that is constant and different from the thread diameter of the introduction portion.

Abstract: A method for manufacturing a bolting part, such as a screw or a nut. The bolting part having a head with a periphery having at least one shoulder extending in a radial plane. The method includes at least the following forming steps: shearing of a wire of material so as to obtain a part of determined length, calibration of the part so as to correct the geometry of the part, rough machining of the calibrated part so as to obtain the head of the bolting part, and finishing of the rough-machined part by means of a third punch so as to form a head having at least one shoulder. The calibration, rough machining and finishing steps being carried out only by cold heading.