The ornamental design for a showerheadarm, as shown and described.
FIG. 1 is a left, front perspective view of a showerhead arm according to my new design, shown with showerhead environment;
FIG. 2 is a left side elevational view thereof, the right side elevational view thereof being a mirror image of the left side shown;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a front elevational view thereof; and,
FIG. 6 is a rear elevational view thereof.
The broken line representations in the figures of the drawings are for the purpose of illustration only, and form no part of the claimed design.
In a preferred embodiment, the nature of this product is as a plumbing fitting in the form of a support arm for a showerhead primary useful for washing body parts.