A device for attaching an element to a holder, the device including a screw having a body and a head, the screw body being able to pass through an opening of the element and to penetrate the holder, and a washer surrounding the screw body when the washer is inserted between the head of the screw and the element, characterized in that the washer comprises an external periphery and an internal periphery each having at least one protruding portion, each protruding portion being able to penetrate respectively the element and the holder to provide the attachment between the element and the holder. Also, an attachment method using such a device, and a front face with including device.