Fastening Device

1. Fastening Device

1 . 1 is a perspective view of a fastening device showing my new design;

1 . 2 is a front view thereof:

1 . 3 is a left side view thereof;

1 . 4 is a right side view thereof;

1 . 5 is a rear view thereof;

1 . 6 is a top view thereof; and

1 . 7 is a bottom view thereof.

The broken lines and areas within them depict portions of the fastening device that form no part of the claimed design.