Phillips/Pozi Drive screw

[SurreyGuy]

Not sure what section to put this question in............

What is the difference between a Phillips screw head and a Pozi Drive screw head?

[Jay70]

Hi Surrey Guy,

If you look at the top end of the screw where the screwdriver locates on a Philips screw it will look like a cross. On a Pozi screw there is an additional but smaller slot between each section.

[jake-the-peg]

Would you believe wikipedia even has an entry for this:

http://en.wikipedia.org/wiki/Pozidrive

[SurreyGuy]

Thanks fellas

[heathfield]

With the Phillips, the screwdriver tip comes to a point, while the Posidrive tip is flattened. The sockets in the screw head match these shapes. If you put a Phillips screwdriver into a Posidrive screw, the pointed tip will prevent a full fit on the shoulders of the slots.This will damage the slots if you have to exert force. Wikipedia doen't seem to realise this.

[SurreyGuy]

Thanks Heathfield

[tomd]

If wikipedia doesn't realise it, write it in.