Andy Burns wrote:
PeterC wrote:

Pity that these aren't stainless:
https://www.toolstation.com/reisser-...i-screw/p67276

Reisser do stainless screws called Retinox, but they're not twinthread,
probably not cheap either.

I (OP) have some of them, sort of middling prices and they're OK but
not as good as Turbo Ultra in many ways. For a given diameter they
appear very thin and have no sort of rifling/cutting point.

--
Chris Green
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