The ornamental design for a hang tag, as shown and described.
FIG. 1 is a plan view of a hang tag showing my new design, the opposite side being identical thereto; and,
FIG. 2 is a side view thereof.
The views of the hang tag not shown form no part of the claimed design. The broken lines depicting a lower portion of the same hanging tag represent environmental elements only and form no part of the claimed design. The separation and bracket indicate, for ease of illustration, that the precise width of the hang tag is not claimed.