note that this makes it even harder to tell which damn size they are
usually mild steel so they strip, especially when it turns out you're using imperial in metric and vice versa
Too many years of wrenching on old equipment has soured me on all except for the good old fashioned hex bolt (S tier) and Robertson (A tier).
Even slotted beats most of these if the steel is decent, scrape out the rust and whack it with an impact screwdriver. I've turned many torx and hex in particular into slotted over the years.
what do you do?
There are not too many metric hex sizes.
There are too many imperial sizes, many of which have silly names.
Having cut the head off many rounded bolts I question your judgement.
Hex could even be A tier except...
Too many years of wrenching on old equipment has soured me on all except for the good old fashioned hex bolt (S tier) and Robertson (A tier).
Even slotted beats most of these if the steel is decent, scrape out the rust and whack it with an impact screwdriver. I've turned many torx and hex in particular into slotted over the years.
what do you do?
There are not too many metric hex sizes.
There are too many imperial sizes, many of which have silly names.
Having cut the head off many rounded bolts I question your judgement.