The ornamental design for an pin for joiningcomponents of a windowmuntinbarassembly, as shown and described in FIGS. 1-2.
FIG. 1 is a front plan view of an pin for joining components of a window
muntin bar assembly showing our new design, the rear plan view being a
mirror image thereof; and,
FIG. 2 is a left side elevation view of the intersection pin window
component of FIG. 1, the right side elevation view being a mirror image
thereof.