Screws for heatsink of GL703?

[hexaae]

What kind of screws are those for the heatsink of the GL703(GS) series?
2.5mm x 3mm flat cap?
Standard M2 like those for SSD NVMe?

[hexaae]

Here is a spare parts image. Should be those in the bottom-left:

[hexaae]

Here is a spare parts image. Should be those in the bottom-left:

[hexaae]

Here is a spare parts image. Should be those in the bottom-left:
https://i.ibb.co/8mj5VSz/7772854276681.jpg