> Hi,
> Trying to figure out the best way to secure a monster case. Anyone
> know what size bolts the threaded holes take
> I assume metric which is pretty hard to find in the US, at least in
> local shops. Looks like about 6mm, but want to make sure before I order.
> thanks!
> -phil

You find all details in the ProMa pdf documents which are available on the
ProMa website:

www.doepfer.com > PRODUCTS > A-100 > Mechanical Details > ProMa link

As the A-100 is manufactured in Germany metric screws, nuts and threaded
inserts are used (e.g. M3 for module mounting, M5 for rail mounting).

Best wishes
Dieter Doepfer