Thread: Nuts!

Assuming you mean the locking properties of the nut are caused by the nut being formed into a conical shape rather than a wheel nut conical style.
These are for high heat applications where a nyloc type nut will melt or be too soft to adequately retain the nut.

These nuts are not always found in high heat applications, as they can (not always) also be cheaper than nylocs depending on the manufacturers stock requirements and order run.

Cheers

no, not wheel nuts

ok,,
if bolt is 10.9 hardness, (think truck suspension) is a nylock suitable? The nuts are rattled up to squeeze pivot bushes into place.

its got nothing to do with the hardness of the bolt/nut your fitting, the cone/wedge/deformed thread (all the same class of lock nut) are used where you would normally use a nyloc but cant because of exposure to heat, oil or other substance that will deteriorate the nylon in the nyloc nut.

it will also be used in place of a nyloc in a minimum thread length environment where you cant get enough protruding thread through the nut to ensure the nyloc will work correctly.

Nyloc nuts are available in higher tensile strengths if you need them but in your application I would suggest not rattling the fixture up with the nyloc. Use a surrogate nut to seat everthing then remove that nut and wind the nyloc on in place remembering that once a nyloc has had more than 5 or 6 turns of thread through the nylon it begins to loose its "hold" and may not be completely effective. The same goes for cone/wedge/deformed thread type nuts. if you have a lot of thread left over you might consider cutting the extra thread off with a hacksaw and cleaning up the leading turn prior to putting on a nyloc, double nutting or converting over to a castellated nut and split pin configuration.

Originally Posted by Pedro_The_Swift

no, not wheel nuts

ok,,
if bolt is 10.9 hardness, (think truck suspension) is a nylock suitable? The nuts are rattled up to squeeze pivot bushes into place.

Nylock's are used on the draw bar bush pins on dog trailers and some suspension points .
I say not a problem

sorry to be dumb,
but what do you lot call a cone nut?

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,

Originally Posted by Pedro_The_Swift

meckanism(RON!!!)

mechanism

Goodaye Ron!