That's one I haven't come across. Japanese used an ISO head - but Pozidriv
worked well enough. Phillips is pretty rare in Europe these days.
Reed-Prince drivers look just like Phillips, but they come to a sharp
point. I don't THINK I've ever seen a Reed-Prince screw, but one
occasionally runs across a R-P driver.
Phillips points are blunted, which means that you have to choose the
right driver (#2 is most common) for the screw you're after or it
won't fit properly. If you try to use a R-P driver in a Phillips screw
it won't seat deep enough, leading to disappointment. I suspect that a
Phillips driver would work in a R-P screw, but I may not have tried,
or I might have tried and succeeded without knowing....
The most common problem that I see with Phillips drivers is choosing
the wrong size bit. Using a #2 driver in a #3 screw head just doesn't
work.
With all the Phillips screws in computer cases these days, I'm
continually impressed with the quality of the fit to my drivers. I'd
expect these screws to come with poorly made heads, but they always
fit the drivers extremely well. I wish this was the case with ALL the
things I work on.
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