Killing time and came across this thread. Did you find one?
It's not what you are asking for but I have This wall lock and it's stashed behind clothes in the closet. I used high security screws into the studs. I have considered filling the heads of the screws with solder as an added security step.
It's not what you are asking for but I have This wall lock and it's stashed behind clothes in the closet. I used high security screws into the studs. I have considered filling the heads of the screws with solder as an added security step.