Request for recommendation for self locking nuts with highest resistance to removal - rec.crafts.metalworking

Message from discussion Request for recommendation for self locking nuts with highest resistance to removal

Dave August

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More options Jul 25, 8:44 pm

Newsgroups: rec.crafts.metalworking

From: "Dave August" <aug...@NOSPAMacmesi.com>

Date: Fri, 25 Jul 2008 08:44:12 -0700

Local: Fri, Jul 25 2008 8:44 pm

Subject: Re: Request for recommendation for self locking nuts with highest resistance to removal

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Stealth Pilot missed the REAL thing we use in aviation when we don't want
the nut to come off, it's called "saftey wire"

It's also pretty tough to get a castle nut to move when it's got a cotter
key through it.

If you are serious about NEVER removing this nut try some "Locktite" and in
a pinch "crazy glue" works well too... FTI "crazy glue" can be rendered
useless by heating it.

--.- Dave (who takes the C-182 down this weekend for it's "annual")

"John2005" <johnjmechani...@yahoo.com> wrote in message

news:930e4b57-aa0e-4cb8-b125-e75c58632d31@x29g2000prd.googlegroups.com...

> Hi everyone,

> 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 from www.mcmaster.com below. 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

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