Re: Destructive Lock Nuts Suck

On Mon, 15 Apr 2024 20:16:53 -0400, Clare Snyder <clare@snyder.on.ca>
wrote:

On Mon, 15 Apr 2024 16:30:25 -0400, Joe Gwinn <joegwinn@comcast.net>
wrote:
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On Mon, 15 Apr 2024 17:13:07 +0100, David Billington <djb@invalid.com>
wrote:
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On 15/04/2024 16:26, Joe Gwinn wrote:

On Mon, 15 Apr 2024 00:12:31 -0400, Clare Snyder <clare@snyder.on.ca>
wrote:
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On Sun, 14 Apr 2024 15:29:01 -0400, Joe Gwinn <joegwinn@comcast.net>
wrote:
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On Sun, 14 Apr 2024 14:03:12 -0400, Leon Fisk <lfiskgr@gmail.invalid>
wrote:
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On Sun, 14 Apr 2024 13:08:35 -0400
Joe Gwinn <joegwinn@comcast.net> wrote:
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<snip>

Google didn't find LoxNut - buried under food stuff.  URL?

Found this tidbit:
>
An-cor-lox nut has a ring of soft metal, such as soft steel or brass at the bottom of
the nut which turns on freely until the nut strikes the part.

Found it: Page 74 of the following:
.<chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://delibra.bg.polsl.pl/Content/16769/P-779_1940_3_Vol107_WU_8.pdf>
.<https://www.google.com/search?q=%22An-cor-lox%22+lock+nuts+lsminsyed&oq=%22An-cor-lox%22+lock+nuts+lsminsyed&gs_lcrp=EgZjaHJvbWUyBggAEEUYOTIJCAEQIRgKGKABMgkIAhAhGAoYoAEyCQgDECEYChigATIJCAQQIRgKGKABMgkIBRAhGAoYoAHSAQk4Njc0ajBqMTWoAgCwAgA&sourceid=chrome&ie=UTF-8>
>
No longer made.  Company gone.  Basically a soft copper washer that is
squished into contact with the bolt thread.
>
I've also run into Spiralock, which looks quite interesting.
>
.<https://www.stanleyengineeredfastening.com/en/brands/Optia/Spiralock>
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Joe Gwinn

Spiralock has gone out of fashion as they are a "single use" locknut
if I remember correctly from my Fiat Allis days - both nut and bolt to
be replaced at every use. Not an issue for NASA as NO bolt gets
re-used - - - but a pain when repairing a loader/backhoe in mud up to
your ankles- head first!!!

Good point, although the nuts are pretty cheap, so one can afford to
just replace them.  The U-straps may also need to be replaced?

>
I looked at the page and it reminded me of the Dardelet thread shown in
Machinery's Handbook, the 21st edition at least which I have. I often
wonder if Ford used that or similar on the crossflow rocker arm
adjusters as the threads were self locking, no locknut.

>
I had not heard of the Dardelet thread, but it is the same idea as
Spiralock.  Not made any more, it seems.
>
Dardelet's US patents are US 2,091,788 and US 1,657,244.
>
>
I ran into yet another locknut contender:
>
Security Locknut, which originated in the railroad industry a century
ago, for use on such things are the assemblies that get the full
steel-on-steel impact loads.  In this case, "security" means against
vibration, not thievery.  There is just one supplier, but they are not
terribly expensive.
>
.<https://www.securitylocknut.com/>
>
The relevant patents are US 1,166,203 and US 1,400,154.
>
.<https://www.securitylocknut.com/post/how-does-the-security-locknut-work>

By the way, McMaster carries these.
.<https://www.mcmaster.com/products/nuts/locking-type~steel-insert/>

Joe Gwinn

 Looks like a similar action as the FujiLok

Do you have any more information or URLs for FujiLok?  Google didn't
help because I didn't know enough to pull this out of the irrelevant
hits.

Joe Gwinn