Abstract: The storage device comprises a plurality of identical trays (1, 2) substantially parallelepipedal in shape and open at the upper and front sides. The trays can be nested, stacked on top of one another and suspended below a horizontal supporting element. The device comprises removable U-shaped connecting members (3, 4, 5) and locking elements (17, 18, 19, 20) integral with the lower and upper ends of the wings of the front frame (10) of the tray (1, 2), so that the stacking in a secure manner of two trays (1, 2) is performed by means, on the one hand, of the elements for locking the two front frames which cooperate with one another and, on the other hand, of the removable connecting members inserted between the rear parts of the walls of the trays.