Flathead countersunk hexagonal M3 x12 machine screw.
10mm thread length, 12mm screw length, 6mm head diameter.

https://www.amazon.com/Metric-Socket-Countersunk-Screw-Bolts/dp/B018RSXBT8

Thank you for not just taking a picture of a screw, and showing us the relevant measurements. Made this easy.
This should be the posterchild for asking this sort of question.