Abstract: A self-locking nut according to the present invention is a self-locking nut including: a first spring portion; a second spring portion provided in an extended manner continuously from the first spring portion and arranged outside the first spring portion; and a nut body to whose upper end marginal portion the second spring portion is fixed, to be screwed onto a bolt, wherein the first spring portion is provided with a fitting portion that has an inside diameter smaller than an outside diameter of a leg portion of the bolt and is fitted with a thread groove formed on the leg portion of the bolt and a latching portion that is provided in an extended manner continuously from a lower end portion of the fitting portion and is protruded from a circumscribed circle of the leg portion of the bolt, and the second spring portion is constructed so as to be latched with the latching portion when the nut body is rotated in a withdrawal direction at a turning force equal to or more than a predetermined force, whereby the n

Abstract: An antitheft retainer clip according to this invention is a retainer clip 1, with which slits 3 are provided in inserted parts 2 so as to form press-contacting parts 4 and auxiliary parts 5, and comprises the press-contacting parts, which are formed to be substantially the same in width as upper parts of cylinder slits 9, raised parts 10, which are put in pressed contact against the upper parts of the cylinder slits, and inclining parts 11, which are provided continuous to the raised parts.

Abstract: An antitheft retainer clip according to this invention is a retainer clip 1, with which slits 3 are provided in inserted parts 2 so as to form press-contacting parts 4 and auxiliary parts 5, and comprises the press-contacting parts, which are formed to be substantially the same in width as upper parts of cylinder slits 9, raised parts 10, which are put in pressed contact against the upper parts of the cylinder slits, and inclining parts 11, which are provided continuous to the raised parts.