Out of interest I tried to look in to what recommend torquing values are for mounting a PCB, and I practically did not find some very clear numbers, especially from PCB manufacturers.
I did find this forum thread (Is there a standard for maximum torque that should be used to fasten PCBs to an enclosure? - Electrical Engineering Stack Exchange) where some talk about it, and one goes all the things that come in to determining a torque value and one says a value of .6NM
So my Question is, do you have some recommendations l, maybe for different srew sizes, maybe from 1mm to 5mm since I think that those includ the most commen sizes for mounting PCBs