Perhaps, stuck limo -- knowing what you know -- you could verify if the screws listed here look fit for the task?:
The specs look promising (M1.6 socket head screws that take a 1.5mm hex key)...We would just need to be sure the 0.35mm thread pitch is the same, and to know what the preferred length would be (i.e. 3mm, 4mm, 5mm, or 6mm).
Kinda silly that they're so...