eli5: Why are there different types of screwnail heads? Does it really affect the strength or integrity of the screw if the head is a Phillips, Robinson or standard?
In: Engineering
Standard slip all the time and are the worse choice. Phillips are better because the cross design makes the screwdriver self-center.
Robinson are the best because the square hole is so superior. Self- centering, and the square shape means you can torque the shit out of the screws without the screwdriver slipping.
Robinson never really caught on outside of Canada though.
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