Quote:
Helicoils flex and have some bit of give which share the torque and pull out forces equally.
Under load items flex if they can to relieve their loads, they do not flex to take on loads


Helicoil data sheets point out that they deform to distribute the stresses and reduce the opportunity to Pull out the first few threads, promoting greater retention strength.

I use 90 pound feet of torque because the techs check wheel studs at 90 and rather than have them keeping twisting here and there, I went to 90, went along to get along. Plus it is only 12% more and below my threshold of concern. I have had wheels shed in the middle of a tight corner with cheap nuts that pulled out, now I replace the studs and or nuts annually rather than mess with them, die checking etc. Woody