General Computing
laptop-repair repair screws
Updated Sat, 16 Jul 2022 06:22:30 GMT

What screwdriver do I use for these?


Im trying to disassemble my computer and the chart below is from the manual.

I cannot find any specific M2x1.9, M2x2.5 and such screwdrivers online at any store. Please help.

Screws specified by the manual: enter image description here




Solution

"M2" is the type of screw and "x1.9" means "by 1.9(mm)" so it is an M2 sized screw that has 1.9mm of thread (the spiral section).

M2 specifies the "nominal" thread diameter as 2 millimeters. In practice the actual diameter is slightly smaller than 2mm as sharp tips of the thread are not a desirable feature and can cause mechanical problems.

What type of screwdriver you need depends entirely on what type of head the screw actually has. There are Pozi, Phillips and flat head types among others. At a quick glance a PZ0 (Pozi 0) is most likely "correct" for M2 Pozidrive screws, but you should figure out the specific type (Pozi or Philips) and use the correct bit.

You should just get a generic "precision" or "computer" screwdriver set. It will likely have most types of screwdriver in the most common sizes you will need and you can use the right screw head.





Comments (4)

  • +0 – Comments are not for extended discussion; this conversation has been moved to chat. — Jun 13, 2022 at 05:23  
  • +8> At a quick glance a PZ0 (Pozi 0) should do for most "cross" head (Pozi and Phillips) screws. -- No. NO. A Pozi screwdriver will not fit properly on a Phillips screw, and you'll likely strip the head. — Jun 13, 2022 at 06:14  
  • +0 – a precision screwdriver set with thick handles, otherwise you can end up "screwed". (a good term for when a screw head gets worn down!) — Jun 13, 2022 at 06:39  
  • +1 – @Bob I have fixed the phrasing. I was more meaning the approximate size for an M2 head, but mixed in a mis-remembering of PH and PZ heads. — Jun 13, 2022 at 18:28