Chastity device discussions and reviews discussion

I suppose its no secret that we all have a pretty unusual or downright stressful relationship to padlocks but this is not my question. Does any of you wise folks (is that actually a word anymore??) know if its possible to buy a padlock that can be locked with a real key that is suitable for piercings? I.e. one made out of surgical steel or nickle-free steel? i know that they are available with a plain screw “lock” but I find that they are too easy to tamper with… I hope you can help me:-)