Remove a threaded screw

[ukmercenary]

Hi

I need to remove a threaded screw how is the best way to do this?

Its the cross head screw in this picture

https://drive.google.com/open?id=1mCcwWjSMbohMMQk_fQI4QXZBLvcUtxmQLg

Cheers
Paul S

 

[footprints]

The cross head is a Phillips not Pozidrive look similar but they will cam out and damage the head if the wrong one is used.
Hard to say if it is size 2 or 3 from the picture, my guess is 3.
If it is tight use a screwdriver that you can hammer and tap the end sharply while turning, strangely often trying to tighten first can make it easier to remove.
The star one is a Torx by the look of it.

 

[Tigercubrider]

a little bit of valve grinding paste between screw and driver helps, as does loads of pressure

 

[JohnD]

if you put a scrap cut from a rubber glove between the driver and the screw, it improves grip. I don't know if it's the added friction, or because it takes up slop.

the "correct" driver should be a perfect fit with no slop, you'll know when you've found it.

 

[rsgaz]

The cross head is a Phillips not Pozidrive look similar but they will cam out and damage the head if the wrong one is used.

Agree, seems that some damage has already been done by a pozi driver.

my guess is 3.

Disagree! An M5 countersunk should always be a number 2.

OP, buy a new Phillips number 2 screwdriver (even if it's just a hex bit to go in an existing bit holder). If you have an old PH2 laying around that maybe has a worn tip itself, you are risking making the situation a whole lot worse if that screw is really tight. A new one will just feel right, like JohnD says.

 

[ukmercenary]

Agree, seems that some damage has already been done by a pozi driver.



Disagree! An M5 countersunk should always be a number 2.

OP, buy a new Phillips number 2 screwdriver (even if it's just a hex bit to go in an existing bit holder). If you have an old PH2 laying around that maybe has a worn tip itself, you are risking making the situation a whole lot worse if that screw is really tight. A new one will just feel right, like JohnD says.

ok cheers
Mate will do

 

[ukmercenary]

Agree, seems that some damage has already been done by a pozi driver.



Disagree! An M5 countersunk should always be a number 2.

OP, buy a new Phillips number 2 screwdriver (even if it's just a hex bit to go in an existing bit holder). If you have an old PH2 laying around that maybe has a worn tip itself, you are risking making the situation a whole lot worse if that screw is really tight. A new one will just feel right, like JohnD says.

I bought a new Phillips Number 2 screwdriver a foot long version and it worked thanks alot!

 

[mattylad]

Also try a slight turn to tighten it before trying to undo it.
This can often aid releasing tight screws.