The ornamental design for a flange for a surgicaltool, as shown and described.
FIG. 1 is an overhead perspective view of a flange for a surgical tool.
FIG. 2 is an underside perspective view of the flange for a surgical tool.
FIG. 3 is an underside perspective view of an alternative position of the flange for a surgical tool.
FIG. 4 is a top plan view of the flange for a surgical tool.
FIG. 5 is a bottom plan view of the flange for a surgical tool.
FIG. 6 is a right side elevational view of the flange for a surgical tool, the left side elevational view being a mirror image of the right side elevational view.
FIG. 7 is a front elevational view of the flange for a surgical tool; and,
FIG. 8 is a rear elevational view of the flange for a surgical tool.
The portions of the article shown in broken lines form no part of the claimed design.