They are usually pozi on bigger terminals like MCBs etc.
Higher mechanical advantage, so more clamping pressure for a given torque.
One of the reasons for using VDE insulated screwdrivers....
Why aren't all screws pozidrive?
Dec 27, 2011
85 Replies
My parrot chewed through that part.
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> However work exceedingly well using any drill driver without needing to
Doesn't that damage the screw?
Not if its a Philips, they are designed to do exactly that.
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Nope, the philips bits are designed to cam out without damage. Plus you are only doing it once, not repeatedly slipping in the head.
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> I've got a set like that, and it's quite useful, but it doesn't cover
I was wrong; they still have the driver bits:
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