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Old 18th October 2019, 07:39   #1
macafee2
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Default one shot nuts

this is caravan related but I know someone will know the answer.
https://www.ebay.co.uk/itm/264452400882

what makes these hub nuts one shot?

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Old 18th October 2019, 08:42   #2
T-Cut
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I don't know what mechanism makes them single use but apparently, they should be replaced if ever removed. Maybe it's similar to replacing certain bolts, because they have a thread lock band or are stretched.


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Old 18th October 2019, 09:10   #3
reworht
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According to the caravan 'experts' -
They are a form self locking nut. The threads are slightly crimped at one end making them slightly oval. Once fitted the threads are spread - if refitted the thread will not grip as tight.
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Old 18th October 2019, 09:18   #4
macafee2
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Quote:
Originally Posted by reworht View Post
According to the caravan 'experts' -
They are a form self locking nut. The threads are slightly crimped at one end making them slightly oval. Once fitted the threads are spread - if refitted the thread will not grip as tight.
agh yes now you have said that I seem to recall reading that or being told that before.

Thank you, I had no idea, totally forgotten.

damn clever people on this forum

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Old 18th October 2019, 10:49   #5
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when I read this thread title I was afraid at first that a member of the royal family had a shooting accident.....
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Old 18th October 2019, 11:01   #6
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What happened to easy split pins to lock stuff in place
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Old 18th October 2019, 11:13   #7
chris75
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Quote:
Originally Posted by Russel View Post
What happened to easy split pins to lock stuff in place
They are reusable and are not acceptable in modern society
Heaven forbid that anyone might try to mend and reuse something
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Old 18th October 2019, 12:03   #8
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A FYI: a none flanged version is a 'Stover Nut', they are used to secure the exhaust manifold on a brand/model of car I won't mention here. Similar principle tho, a few threads are an interference fit due to being non-circular.


images:


https://www.google.com/search?q=stov...w=1536&bih=728
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