Jam Nut Science

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Sep 6, 2013 | 05:39 PM

Handy Man

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Jam Nut Science

For anyone that uses jam nuts for... well... anything. This is very good information:

The Use of Two Nuts to Prevent Self Loosening of Fasteners

Sep 6, 2013 | 08:24 PM

sixshooter

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Quote:

Originally Posted by Handy Man

For anyone that uses jam nuts for... well... anything. This is very good information:

The Use of Two Nuts to Prevent Self Loosening of Fasteners

I did not know that.

Sep 6, 2013 | 08:48 PM

cordycord

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I just learned something new about my nuts.

Sep 6, 2013 | 10:03 PM

soviet

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Useful, but both of my nuts are thick. So, not AS useful as for someone with different sized nuts.

Sep 6, 2013 | 10:26 PM

cordycord

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What happens to torque values if one nut is lower than the other?

Sep 6, 2013 | 10:52 PM

jpreston

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I heard hustler pays someone to jam his nuts.

Sep 6, 2013 | 11:03 PM

sixshooter

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Quote:

Originally Posted by jpreston

I heard hustler pays someone to put jam on his nuts.

Ftfy.

Sep 6, 2013 | 11:48 PM

2manyhobyz

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Interesting.
But if you notice in the first video he did not tighten the nuts correctly. The method in the second video is what I understand to be correct. (using a backup wrench)

Last edited by 2manyhobyz; Sep 6, 2013 at 11:50 PM. Reason: typo

Sep 11, 2013 | 10:01 AM

Seefo

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Interesting read. Thanks for sharing!

Sep 11, 2013 | 12:41 PM

#10

tpwalsh

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Quote:

Originally Posted by 2manyhobyz

Interesting.
But if you notice in the first video he did not tighten the nuts correctly. The method in the second video is what I understand to be correct. (using a backup wrench)

That was my first thought. Not disputing the science, but the video to me isn't accurate.

Sep 15, 2013 | 10:23 PM

#11

chpmnsws6

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What about using a lock washer between them?

Sep 16, 2013 | 09:00 PM

#12

mr_hyde

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Quote:

Originally Posted by cordycord

What happens to torque values if one nut is lower than the other?

The article says tighten the small nut to ~25% of the final torque spec and then run the big nut into it at 100% of the final torque. There is math involved that makes my head hurt.