What screws do I need for my shaker bubble

[MR291]

I am missing three retaining screws under the bubble.

Is someone able to give me the sizes and perhaps a source for the missing screws.

I need two for the grounding strap area which I believe are the same size as for the doors, and one at the rear of the bubble to guide the cable.

I have attached a picture.

Appreciate it.

[Roadrunner420]

It might be metric.  I remember mine where.  I got my grilles from Shaker hood.com