The invention relates to a unit (1), in particular an electrohydraulic unit, with at least two hydraulic connections (2, 3) fastened to it, in particular pipe or hose connections which are provided largely parallel to each other at a defined distance A. The object is to form the system described in such a way that increased miniaturization of the unit (1) is made possible, without having to abandon the automated assembly of the hydraulic connections (2, 3). According to the invention, it is proposed that a screw fitting (5, 6) which can be turned in relation to a pipe (13) or hose is provided for the fastening of the hydraulic connections (2, 3), having a spanner flats portion (7, 8) and comprising an external thread (14), which is received within an assigned receiving bore (9, 10) in an internal thread (15) of the receiving body (11) in such a way that a sealing face (16) sits on a mating sealing face (17) of the receiving body (11), wherein the screw fitting (5, 6) has in addition to the spanner flats portion (7, 8) a further spanner flats portion (12), and that the spanner flats portions (12) have different widths across flats SW.