The ornamental design for a fastener for sectionalcombinationrack, as shown and described.
FIG. 1 shows a perspective view of the present design;
FIG. 2 shows a right side elevational view of the present design;
FIG. 3 shows a top plan view of the present design;
FIG. 4 shows a front elevational view of the present design;
FIG. 5 shows a bottom plan view of the present design;
FIG. 6 shows a left side elevational view of the present design;
FIG. 7 shows a rear elevational view of the present design;
FIG. 8 shows an exploded view of the present design;
FIG. 9 shows another exploded view of the present design; and,
FIG. 10 is a perspective drawing showing that the fastener for sectional combination rack is attached to a tube of a sectional combination rack; the broken line drawing of the tube is shown for illustrative purposes only and forms no part of the claimed design.