Screwfix have discontinued their Turbo Ultra stainless steel screws and I'm looking for alternatives - without much success at the moment.
While Turbo Ultra screws weren't perfect (it is easy to damage the heads and also to shear them in hard[ish] wood) they were my preferred screws for general outdoor use. As I said, I'm looking for alternatives now as my stocks of Turbo Ultra run out. Requirements are:-
Stainless (obviously) A2 is fine, A4 would be OK but more expensive I think
Easy driving without pilot hole This is the real stumbling block with most alternatives, the deep thread and 'rifling' with a cutting groove at the point seems to be very rare in stainless.
Pozidriv for preference Not vital, Torx or square would be OK, but pozi is 'easier to find' in dark inaccessible places.
Good range of sizes, especially in 5mm I'm getting very short of 5x60, 5x70 and 5x80 screws in particular.
The best alternative I've found so far are Axminster's Woodspur A4 stainless screws but: A4/expensive, not pozi and not available in 5x70 or 5x80 (or larger). Any suggestions anyone?