Pozi and phillips screws

[Bahco]

I always seem to have the wrong bit in my cordless when it comes to driving screws home and it drives me mad?

Is there such a bit that will drive both screws home or do you have any tips for telling the difference.

 

[PrenticeBoyofDerry]

The differences are subtle. At first glance it appears to be a Phillips, but on closer examination you'll notice a second set of cross-blades at the root of the large cross-blades. These added blades are for identification and match the additional makings on the head of Pozi-drive screws, known as "tick" marks. So, the marks are for identification.

Two features of the Pozidrive screw and driver combination make it unique, and superior to the Phillips. First, the tip or the Pozidrive driver is blunt, which also helps it to seat better into the recess in the screw, unlike the Phillips which comes to a sharper point. This becomes a problem as the tooling that forges the recess in the head of the screws begins to show signs of wear. The recess becomes more and more shallow, which means the driver will bottom-out too soon and will cause the driver to cam-out.

The second unique feature is the large blades on the driver have parallel faces, where the Phillips blades are tapered. The straight sides of the driver allow additional torque to be exerted without fear of cam-out.

A Phillips driver will have problems driving a screw with a Pozi-recess, as a Pozi-driver would have little luck driving a Phillips head screw. One more tip. In a pinch it is possible to drive Pozi-drive screws with a Phillips driver, but you will need to grind down the tip slightly, and expect some slipping to occur.


I nicked this

 

[pompeyal]

Use a hammer, this works for both types ....lol .... but joking aside the info given by the 'Prentice' is sound.

 

[Chukka63]

i only buy pozi's

 

[Rsenal]

Buy a pz2 bit which will be compatible with most sizes for £1 then only buy pozi screws. All quality screws will be labelled

 

[big-all]

in woodworking 90% are are pz2 4% are pz1 and 4% are pz3
the rest are collated or drywall screws and use ph2
[mistake eddited]

as an aside the double ended bits you get with a battery drill tend to be ph2 bits so fairly useless in wood working

i describe pz as a star within a star

 

[EddieM]

in woodworking 90% are are pz2 4% are pz1 and 4% are pz2
the rest are collated or drywall screws and use ph2

as an aside the double ended bits you get with a battery drill tend to be ph2 bits so fairly useless in wood working

i describe pz as a star within a star

90% are are pz2 4% are pz1 and 4% are pz2

eh???? 90% are pz2 and 4% are pz2 make ur mind up !!

do luv ya though big-all !!! (in a manly way of course!!)

 

[Harbourwoodwork]

in woodworking 90% are are pz2 4% are pz1 and 4% are pz2
the rest are collated or drywall screws and use ph2

as an aside the double ended bits you get with a battery drill tend to be ph2 bits so fairly useless in wood working

i describe pz as a star within a star

Yeah I alway's thought that was odd,I wonder if they don't use pozi in japan

 

[foxhole]

Yeah I alway's thought that was odd,I wonder if they don't use pozi in japan[/quote]
Probably can't pronounce it.

 

[big-all]

in woodworking 90% are are pz2 4% are pz1 and 4% are pz2
the rest are collated or drywall screws and use ph2

as an aside the double ended bits you get with a battery drill tend to be ph2 bits so fairly useless in wood working

i describe pz as a star within a star

90% are are pz2 4% are pz1 and 4% are pz2

eh???? 90% are pz2 and 4% are pz2 make ur mind up !!

do luv ya though big-all !!! (in a manly way of course!!)

sorry that should be pz3 now corrected