Abstract: A device for assembling an accessory on a ski. The accessory comprises a base (13) designed to be placed on the ski surface and at least one hole (7) used to receive an assembly screw (1). The hole and the screw cooperate in such a way that, when the base (13) is placed on the ski, the screw is held in its hole and the screw tip protrudes beneath the surface of the base. The screw has, at its lower end, a threaded portion (4) having an outside-to-outside diameter (D) and a length (L), then, between this threaded portion (4) and the screw head (2), a smooth portion (3) having diameter (D') smaller than diameter (D) and a length (L'), and the hole (7) in the base comprises, in its upper part, a rotationally-generated cylindrical portion (9) having a diameter of between (D) and (D') and a height (H') clearly smaller than (L'), and, in its lower part, a portion (10) whose dimension, considered in cross-section in a horizontal plane, is greater than diameter (D) and whose height is less than (L).