Device of coupling by fitment between two elements

The device has a pin (1) constituted of a rod (13) mounted with a head (14), where the rod presents a thrust between a base and the head of the pin. A fixation terminal (10) has a wall defining a cavity (6) internally divided into upper and lower housings (5, 12). An interior wall of the housing (12) has a flange (8) destined to cooperate with a flange (2) constituted by the thrust.