Ajustlock Black Slide Bolt Lock (zinc)

What is the height and the width of the just the small bracket. It needs to got on the edge of a 2x4 for my back gate?

can you add a padlock for extra security

what is the depth when laying flat, want to put on a pocket door, at the top, it's apool bath, super narrow space between pocket door and wall

Does this come with one way screws screw it down but cqannot take out please let me know.