M.2 ssd mounting screw size Openwrt One

Hardware Questions and Recommendations
1

I recently purchased and received an Openwrt One router. There was not screw to secure an M.2 SSD drive. I purchased a kit with M2 and M2.5 screws, but neither fit. Does anyone know what size I need to get?

Edit: I tried a different M2 size screw, and did get it to thread properly, so it is an M2 that is needed.

2

It didn’t come with the securing screw in the package?

3

Mine had them in the package, as well as the screwdriver.

4

Mine had a package of screws and screwdriver. I think that I was too impatient in trying to screw it in. I think that I may have been off by a degree in my angle of approach and couldn't get it to screw in. I have since gotten the M.2 SSD secured.