One more question, are all the screws the same size (length)?

I did mean P5 and not T5, the same size that it is for the MacBook Air and the MacBook Pro 2015?

The screws for the bottom cover is a T5 right? The six screws.

Also, do you know if it's possible to buy a set of replacement screws for the cover?

One of my screws is stripped, I can unscrew it but if I do I can't use it again for sure.