torque spec vs thread pitch

   / torque spec vs thread pitch #12  
Most of what I have seen torqued over the years gave a +/- 3 ft pounds tolerance. That's a 6 ft pound window which gives you some wiggle room no matter the thread pitch.
 
   / torque spec vs thread pitch #13  
According to this chart the torque specs are more complicated than the simple inclined plane model I mentioned earlier. :confused: Life is usually more complicated than it seems at first.

There is only a 2.5 pounds difference of torque between 1/2-13 and 1/2-20 thread. Fine thread bolts are a lot stronger than coarse thread bolts. By a bunch.
 

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