The ornamental design for a supportstructure for torque delivering spindle units for tightening screw joints, as shown and described.
FIG. 1 is a front, right, and top isometric view of a support structure for torque delivering spindle units for tightening screw joints showing our new design; and,
FIG. 2 is a rear, left, and bottom isometric view thereof.
The portions shown in broken lines form no part of the claimed design.