> I'm hoping someone having experience with self locking nuts can help
> me with the following.

> At mcmaster.com I found four types of self locking nuts I can use on a
> 1/4-28 thread bolt. I just want to snug the nut down on the bolt to
> take up any linear or axial play, but I'm not going to really torque
> the nut down with any significant force. I could use loc-tite to keep
> the nut from backing off but I want to try a self locking nut.

> I have listed my choices fromwww.mcmaster.combelow. I need to know
> which nut will provide the most resistance to removal with a wrench.
> There are no vibrations or anything in the application, I just need to
> know which self locking method will provide the most resistance to
> removal with a standard wrench. The nut will never be removed or
> reused after it's snugged down.

>  If you could also list them in order of most resistance to least
> resistance that would be great. If you are aware of any information or
> online reference for actual forces required to loosen the nuts, that
> would also be very helpful.

> 90566A210  (Nylon insert type Lock nut)
> 94830A515   (Expanding type lock nut)
> 91837A250   (Distorted thread type lock nut, top-lock style)
> 90040A120  (Distorted thread type lock nut, center-lock style)

> I would appreciate any feedback or experiences with self locking nuts.

> Thanks
> John