This adjustable grip latch provides infinite adjustment like a screw or a bolt, but without the risk of losing any parts! It operates like a screw, just turn clockwise to tighten, counter-clockwise to loosen. When opening, the cam backs away from the frame of your door, then swings out of the way, allowing the door to open.
This model requires a 4mm hex wrench to operate the latch (the wrench is not included), so when your door is closed, there's some measure of security.
No special mounting hardware is required (it's all included).