The ornamental design for a cableinsertiontool for spiral hanger, as shown and described.
FIG. 1 is a front elevation view of a cable insertion tool for spiral hanger, showing my new design;
FIG. 2 is a right side elevation view thereof;
FIG. 3 is a left side elevation view thereof;
FIG. 4 is a front elevation view of the cable insertion tool for spiral hanger in which a movable hub element has been moved along rods to the left side;