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Simple question about torqueing of stainless steel bolts

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bertyboy

Structural
Jul 18, 2003
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GB
I would like to know what the coefficient of friction u,
and the nut factor k, is for a nut tightening on a bolt,
for stainless steel, on stainless steel. I have not been
able to find this value.

For mild steel on mild steel, Gr 8.8 bolts :-
u =0.15, and k = 0.2

If someone can clarify this, could you back it up with
some sort of reference on the internet ?

Thanks, Bertyyyyyboyyyy !!!

 
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For stainless nuts on stainless bolts you need to really look out for galling. If the nut and bolt are the same type of stainless with no specific anti-galling lubricant the stainless nut and bolt will virtually weld together under the torque and you will have to break them to get them apart. [reading]
 
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