I have the Ritter MK1 fullsized and mini knives, which I love. The pocket clips are getting slack because the tiny screws that secure them are slowly coming loose. They are so small, I really can't tell if they are hex head or Torx. I'm sure I'm going to lose one or more of these tiny screws soon if I don't get them snugged up.

Does anyone know for sure what fastener type they are, and what size wrench I need to tighten them up? I want to clean them then reinstall with some blue Loctite.