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by murderfs 22 days ago
> Also, as the device is Japanese, it uses JIS screws rather than Philips (in addition to triwing), which could surprise some.

My understanding is that Europeans also generally tend to not use Phillips screws, but Pozidriv instead.

2 comments

Am European, yeah but pozidriv was never used for tiny screws. We have also pretty much migrated all screw sizes to torx nowadays, so I only ever really see pozidriv on older appliances and hardware, while Philips mostly happen on imports.
Philips in PZ screws is generally going to cam out like a regular philips head, just because you're not biting into the top with the PZ... triangle bits? I'm sure there's a technical name haha. So you can get by with that, a self-selected crappy philips experience when you could've chosen pozidriv bliss.

Philips in JIS screws is an exercise in anger management. IIRC, JIS has a much wider angle on the bottom of the drive, making it sink into the head less than a philips drive would, so it's a great way to turn your philips driver into an artisanaly-rounded single-hole punch.

Also note that drivers are made far harder than screws, so it will take many screws turned rivets before a driver becomes said artisinal hole punch.
It's not the top triangle bits that cause the problem, it's that the whole geometry is different with parallel versus tapered flanks.