Procedure placement of a fixing base of a piece and fixing tool for putting into practice the procedure.

Method of fitting a fixing base for fixing a piece to a support (100), with the aid of a tool fixing pin provided with a guide pin (30), in the course of which the base is in solidarity fixing and the end (23) of the guide pin (30), the fixing base is applied against the support (100) and is fixed thereto by means of a pin, the method being characterized by the fact that sympathizes the base and the end (23) of the guide pin (30), by a relative movement of the base and the end (23) of the guide pin (30), each other, in a plane perpendicular to the axis (21 ) of the guide pin (30).