A multi-purpose external fixator (1) comprises at least one screw (2) to be implanted in a bone fragment (3) and a frame (7), in turn comprising at least one clamp (8) and at least one bar (9) the clamp (8) comprising a central body (11), in which a slot (12) is made for connection to the screw (2), an element (13) for locking the screw (2) in the slot (12) and a lever (14) for operating the locking element (13) the lever (14) is hinged to the central body (11) and can move away from and towards an end position for engagement of the locking element (13) and stable connection of the screw (2) to the slot (12) in the end position the lever (14) and the screw (2) are positioned in a T-shaped configuration relative to each other, in which the lever (14) forms a grip for implanting the screw (2) in the bone fragment.