Jackscrew comprising a screw-nut assembly (100, 200), the nut provided with a surface (215) in contact with the thread of the screw (100) being and receiving a sensitive electric organ (300) to a mechanical interaction with the thread of the screw (100), this sensing member (300) disposed in the nut (200) in proximity to said surface to interact with the thread of said screw in the event of wear of this surface (215), said sensing member (300) a probe having an outer sheath (320) and being disposed in a preformed passage (220) of the nut, characterized in that the outer sheath (320) of the probe has a thread (325) suitable for cooperating with a complementary internal thread (225) having the preforming step of the nut, said threads thus ensuring (225, 325) setting the sensing member (300) by screwing on said nut.
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