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Recess Screws Ltd

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pete.mason:
Curious that it seems only the chinese use phillips now most other is  pozidrive

Dave Smith:
KeithG. Do you know when Philips head screws took over from slotted? And when did the modern idea of not drilling holes, just screw a parallel continuous thread screw through both pieces of wood?

KeithG:
smiffy...... this is the reason for torque settings on drivers. Being a joiner builder all my life designs of screw heads and screw shanks have really been over done to try and take more than the producers fair share of the market.
Some designs make the DIY person think they are the best to use but in practice are not........ just much more expensive to purchase for no advantage in fixing.

Smiffy:
I understand that Robertson drivers can grip too well, meaning that for use with power tools there was a tendency to sometimes overdrive the screw, something less likely to happen with the Phillips.

MartinR:
There's a write-up in Wikipedia about Robertson screws: https://en.wikipedia.org/wiki/List_of_screw_drives#Robertson

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