Here's a very simple one.
I need to build some weird adapter for a PC's VGA (15 pin, 3 row D-SUB / DE15 / HD15) port, and I want to buy a case for it with the correct screw type.
Wherever I read about that plug type, two types of screws are mentioned:
Any hint (link to some official spec sheet, etc.) what screw type is standard for the VGA port ?