Quote Originally Posted by harry View Post
sorry to be dumb,
but what do you lot call a cone nut?
They live in the bad part of town are seen sucking on a modified bottle.

Quote Originally Posted by Pedro_The_Swift View Post
Hi Harry

just an over-tall nut that rounds off/up towards the centre, from what I can figure the top cone portion of the threads are distorted(?) to provide a locking meckanism(RON!!!)

maybe only 2 or 3 threads more than normal,
Quote Originally Posted by harry View Post
ok pedro,
from that description it sounds like what we call a 'metal locknut' where the threads in the locking section are either 'out of round' or distorted
or a cut or several is put into the locking part and the that part of the nut is closed a bit so the threaded bit bites.
metal locknuts are primarily used in high temp applications
if you can screw the nut on past the locking part, unscrew it and chuck it. [away]
Ohh... that kind of cone nut