Thread inserts and screws at bottom

hello, can you please tell me what thread inserts and screws are used to attach the keyboard assembly to the base? the five main screws at the bottom. That would be a great help. I have circled the location with red rings.

Hi, Thank you for the response, I am not sure if it would be the bottom cover or the input cover. I am talking about four of these and the one in the middle at the back.

The four in this picture are (M2 4.0mm fastener with a T5 head which is 4.6mm diameter and 0.6mm thick (x4)) I assume, please tell me if I am wrong or right and if you could identify the fifth screw.

I am talking about these five screws