They are not interchangeable especially if you are using an impact driver.
They are significantly different. Phillips were designed to cam out, pozi weren't.
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12 years ago
Why aren't all screws pozidrive?
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12 years ago
The knee or the pozidrive?
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12 years ago
You can use a philips on a pozidrive if you are careful, but if you have both drivers, the other screws work fine on one of them.
What do you mean?
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12 years ago
popliteal fossa
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12 years ago
Phillips were designed for the auto industry so that when the screw went home the bit slipped out.
formatting link
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12 years ago
Fuck.
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12 years ago
the screw so you can't get the bloody thing back out later on".
Did they not think of removal? At which point the bit slips BEFORE you turn the screw.
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12 years ago
[Snip]
funnily enough, you use the other edge of the slot when removing. But it does, probably, mean you can't re-use the screw.
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12 years ago
Philips were designed to cam out. Posi were designed not to cam out. Pretty different AFAICS.
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12 years ago
Look at dry wall screws.. they use philips and are designed to slip out once the head is at the right depth. If you use a pozi driver they will end up too deep.
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12 years ago
Phillips, Pozidriv, Supadriv, Frearson, Torx etc. etc. etc.
You see the problem here?
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12 years ago
different to a philips?
the bug removed - the edges weren't straight enough.
Some might, but others document the fine detail that distinguishes good or even great inventions. By reading and understanding some of them you would appreciate why Phillips and Posidriv are different.
If you can't be bothered then it's your loss.
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12 years ago
Of _course_ they thought of removal. Then they though about how the self cam-out saved 5$ a car, and that the removal process being more complicated would mean it would take longer and cost more. Bringing in more profit to their dealers.
Why do you think they have special tools?
Andy
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12 years ago
My experience of fixing cars 25+ years ago (e.g. change bottom hose on Mini) and boilers more recently (remove heat exchanger on G-W Cxi combi) is that the designers never think about the need to remove anything!
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12 years ago
As far as building is concerned, Phillips is generally used here, square drive occasionally. Becoming a third world country is not a current worry.
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12 years ago
formatting link
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12 years ago
Lemon and lime.
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12 years ago
They're usually brass, or monkey-knob-cheese-metal, and a Philips/Pozi would mangle as soon as look at it.
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12 years ago
look like merged versions of the simpler ones.
I don't see "System Zero" listed, though. AFAIK, those drivers and bits are only available from RS Components and they're very useful for opening up domestic appliances that the manufacturers want you to throw away & replace.
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12 years ago
What a cynical^Wtruthful viewpoint.