I just tested to see if it fit. I don’t know the exact dimension, but the screw that came with my ssd m.2 kingspec was almost the same size (1mm) longer then the original, but it fitted perfectl
To enter the bios keep pressing the ESC key when power on your laptop, when you think it display the bios screen, press Right key 5 times, Down key 6 times, Enter key 2 times, Up key 6 times, Enter keys 1 time.
I am aware of that, but read the description on the you tube video. If you have a blank screen, but the notebook is still running, you can follow this sequence to blindly reset the default configuration in the bios.