>Nope.  You have to be able to turn the nut by hand to set it, then lock it in.

That's for some value of "have to" and "by hand" - what I really
should have said is that you have to be able to make adjustments of
tiny fractions of a turn, without stick-slip problems and with low
enough forces that there's no danger when running up the nut of
overtightening and causing Brinelling* of the bearing races.  I
wouldn't think a self-locking nut of that size would be a good candidate.

*having the balls or rollers indent the races, named after the
Brinell test for hardness.  The reason ball bearings aren't good for
heavy shock loads, since they have only point or very short line
contact with the races.

Yrs,
d