A torque device (1) for mounting of a syringe needle (2) to a syringe barrel (3), said torque device comprising a device hub (4) and a torque ring (5), wherein said device hub (4) is provided with a central recess (6) extending along a rotational axis (7) of the device hub (4), wherein said central recess (6) is configured to receive and grab a needle hub (8) of the syringe needle (2), directly or via a needle cover (21) attached to the needle hub (8), and with the needle (2) extending along the rotational axis (7) of the device hub (4), wherein the torque ring (5) is provided with a plurality of arms (9) extending inwards from the torque ring (5), wherein the arms (9) together define a central space within which the device hub (4) is rotatable, wherein the device hub (4) is provided with a plurality of abutment portions (10) in the form of recesses or protrusions configured to engage respective inner end portions of the respective arms (9) upon relative rotation between the device hub (4) and the torque ring such that a momentum applied to the torque ring (5) is transferred to the device hub (4) via the engagement between the arms (9) and the abutment portions (10), wherein the arms (9) and the abutment portions (10) are configured so that the arms (9) bend and slip over the abutment portions (10) upon application of momentum over a predetermined threshold level at rotation of the torque ring (5) in a tightening direction for mounting of the needle hub (4) to the syringe barrel (3).
