Quote:
Originally Posted by Cobra #3170
I use proper air craft grade bolts and nuts on my half shafts and have found that they do not maintain torque. I have to change them a couple of times a year. I think they may be stretching under the torque load. I did not have this problem when the car had lower power levels in the 1960's through 1990's.
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Now, this is an area that is just slightly beyond my expertise
, but you might consider going with a NAS 624/MS 21250 Series bolt (as per that two page PDF I just posted).