The invention relates to a shearable screw (21) for a wire connection assembly (1), such as a spliced connector or a lug, comprising, along an axial direction (D) of the screw (21), a driving section (23), a threaded section (25) with an outer screw thread (27) for being engaged with a corresponding thread of a connector body (3) of the wire connection assembly (1), and with a contact section (29) for establishing electrical contact with a stranded wire, the screw (21) having a predefined shear torque. The invention further relates to a wire connection assembly (1) for stranded wires, the assembly (1) comprising a connector body (3) with at least one wire receiving chamber (5) and at least one bore (13) for a shearable screw (21), the bore (13) being internally threaded and being opened into the wire receiving chamber (5), further comprising at least one shearable screw (21) for the at least one bore (13). In order to provide a shearable screw and a wire connection assembly which can be used for different diameters of a stranded wires, it is intended according to the invention that, at least in the threaded section (25), the predefined shear torque of the screw (21) varies in the axial direction (D) of the screw (21).