Guys. Here is the deal. I have been opening macbooks and macbook pros for at least 7 years now.
All you need pretty much (99.9 of the time) is 3 screw drivers to open the back case also called and known as the lower case. Then you need a special screw driver (the 4th one) in case you may need to replace your macbook battery one day. Forget about anyone telling you anything else….just buy these 4 screw drivers and you will be fine. Also when trying them out you gotta have a magnifier with you if you don’t have good eyes and be able to distinguish between a torx screw (in the shape of a star), a phillips screw (in the shape of a cross), and a tri point screw (in the shape of a ….oh well…you know there are just 3 sides).
Here they are:
1) T4 screw driver (this will open all macbook pros pretty much)
2) T5 screw driver (you need this for some macbooks as well as for other components inside of the macbooks)
3) PH00 (this is a very generic and useful philips screw driver that will open pretty much lot of components of apple as well as old macbooks cases)
4) Y0 (This is a tri point screw driver allowing to open the battery screws. very handy)
Here you have it. Take it from a pro…and again…don’t let anyone bully you or confuse you. Try to think about T4 and T5 rather than P5.
There are other T3, T6, T7, T8, and T10 screw drivers that you may or may not need depending on what Apple components you will need to open (e.g. the hinges screws use T8 where as iMacs may need T6 as well as T7)…if you happen to have extra $ and able to get hold of the entire T set….from T3 to T10….it will not hurt to have it. For iPhones and iPads there are other type of screw drivers and that is where the P confusion is coming from…for example P2 or Pentalobe 0.8mm is a very important screw drivers for opening iPhones as well as Y000 or tri point 0.6mm. Also the screw driver Y00 is almost = with PH000 and you should be able to get away by using either one.