Abstract: A device for connecting blades (7) to a hub (5) in a propeller of either a fan or an aircraft has a variable fitting in at least a moving position. An L-shaped element (1) connects each blade (7) to the hub (5) so that an attachment of the blade (7) to the hub (5) has a longitudinal axis eccentric with respect to a longitudinal axis of the hub (5). The L-shaped element (1) has a first long leg aligned parallel with a longitudinal axis of the blade (7). The L-shaped element (1) also has a short leg perpendicular to a flat plane of the blade (7) and parallel to a rotational axis of the hub (5). A screw (4) fastens the second short leg of the L-shaped element (1) to the hub (5). This screw (4) is aligned parallel to the flat plane of the blade (7) but has a longitudinal axis spaced from the flat plane of the blade (7). A circular crown (6) presses the L-shaped element (1) to the hub (5) while a hole (3) retains the screw (4) whereby the hole (3) is eccentric with respect to the crown (6).