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Your favourite screw head

Arran Cameron

What is your favourite screw head for small machine and self tapping screws? Is it Slotted, Pozidriv, Torx, JIS B 1012, or do you prefer something more exotic like Pentalobe or Tri-Wing?


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    Andy Millar:

    Depends on the hardness of the material of the screw, if it's a decent steel then hex socket or (for bigger screws) torx, for brass slotted, and for anything in between (which is most screws) pozi. But then I do tend to go for hex when I use stainless screws, which are pretty soft, so it's slightly more subtle than that.

    I have wondered whether any particular head patterns are optimised for screws made from a material of a particular hardness.

    Torx should be brilliant, but the slight slope on the drivers means they can still tend to cam-out, which hex socket doesn't. It would seem that a "straight sided torx" would be superb, but maybe there's a subtle reason it wouldn't work? (Maybe hard to locate the tool in automated assembly?)

    Torx drivers vary in quality and some makes are a better fit than others.
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  • 0
    Andy Millar:

    Depends on the hardness of the material of the screw, if it's a decent steel then hex socket or (for bigger screws) torx, for brass slotted, and for anything in between (which is most screws) pozi. But then I do tend to go for hex when I use stainless screws, which are pretty soft, so it's slightly more subtle than that.

    I have wondered whether any particular head patterns are optimised for screws made from a material of a particular hardness.

    Torx should be brilliant, but the slight slope on the drivers means they can still tend to cam-out, which hex socket doesn't. It would seem that a "straight sided torx" would be superb, but maybe there's a subtle reason it wouldn't work? (Maybe hard to locate the tool in automated assembly?)

    Torx drivers vary in quality and some makes are a better fit than others.
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