Originally Posted by RCPC
I think it is an M3 nylon screw. Aluminum works well too.
As mine is in the mail from the previous owner I don't know if the bolts are pan head type or countersunk flat head type. I can get either in M3 nylon from Micro Fastener but I want to get the right ones. In the end I'll have 50 of them. If you want a few I'll stick some in an envelope for you.