shades
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| posted on 2/5/05 at 02:51 PM |
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Nyloc nuts
I remember reading somewhere that nyloc nuts to pass SVA must have 3 threads exposed on the bolt when tight... Is this true?
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flak monkey
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| posted on 2/5/05 at 02:52 PM |
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Sounds familiar yep.
David 
Sera
http://www.motosera.com
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britishtrident
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| posted on 2/5/05 at 03:10 PM |
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Reason why is a nyloc insert which is not fully on the thread will actually tend to slacken more than a plain nut.
In the late 1970s Chrysler changed the bush material on the brake reaction rods on the Avenger and Sunbeam Hatch models, the new bush was thicker and
put the nyloc nut right to the end of the thread, after a month or so several vehicles were found with the nuts slack as a result thousands of
vehicles were recalled shorter all steel "Symmonds" self locking nuts to be fitted and problem was cured.
[Edited on 2/5/05 by britishtrident]
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tractorboy
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| posted on 3/5/05 at 04:51 PM |
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if i remember correctly as long as the bolt comes through the nut by at least one thread its deemed in safety.this is certainly true in the aircraft
industry.
also be aware there is a heat restriction when using nylocs.i believe it is somewhere in the region of 250 degrees centigrade.
scott
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