FIG. 1 is a front perspective view of an adjustable forehead support screw for a respiratory mask according to our design;
FIG. 2 is a front view thereof;
FIG. 3 is a rear view thereof;
FIG. 4 is a left side view thereof;
FIG. 5 is a right side view thereof;
FIG. 6 is a top view thereof;
FIG. 7 is a bottom view thereof;
FIG. 8 is a rear perspective view thereof; and,
FIG. 9 is a front perspective view of the screw in position on a respiratory mask.
In FIG. 9, the broken lines showing environment or structure are for illustrative purposes only and form no part of the claimed design.