Konvas Automat cine camera Screws length and width for motor drive?

[Jeremy Bergman]

Hi anyone and everyone i'm having trouble in understand what screw is required for the Konvas movie camera  motor drive it did use a counter-stuck screw but I lost a quite a while back and was wondering if anyone here could help what would be best  the fit?.

Konvas movie camera serial number 751278 bought in 2019 on Ebay.

 thank you 

[Aapo Lettinen]

Need to see a picture of the whole motor and of the exact position the screw is missing from.

Almost all Soviet stuff uses millimeter sized screws so usually standard M3 etc screws work fine. The length is easiest to measure from other camera where that screw is still in place

[Jeremy Bergman]

it's were the motor drive hooks onto the on the right side of camera and drives the rotating mirror shutter from inside the camera. 

will try to upload picture