Abstarct: Joints are of the most important components in steel structures that are classified in terms of bending behavior, depending on bonding rigidity, into ranges: articulated, semi-clamping, and clamping. In addition to bending moments, members are sometimes placed under torsional moment. Not many studies have been conducted regarding the tolerance of torsional moments and the effect of attachment details on the torsion angles, shear stresses and bending stresses in the members' sections, and studies have usually been conducted on ideal mathematical models. In this study, simple shear connections and seated beam connections were numerically examined by Abaqus software, and the torsional moment tolerance in the rebound and the torsional angle and vertical and shear stresses along the member were studied. baxsed on the research, some tables were designed and, depending on the type and size of the joints, the torsional rigidity was determined and the results were compared with the analytical model of torsional fixed supports and torsional simply supports. Moreover, using these results, some coefficients were set so that the engineering community can execute the torsional design of the real joints by simple relationships without the need to solve differential equations and obtain accurate results. In this study, it was shown that the seated beam connections with acceptable difference percentages, such as the math model of torsional fixed supports, and the simple shear connections with an acceptable behavioral difference are similar to those of the theoretical torsional simply supports.