Quote
If you want to calculate exact preload on the fastener, friction and the nut size will come in to play. But, if you're just applying a torque to a nut or fastener, size doesn't matter. Torque is just a rotational force around a point.


Ahhhhh - there's the explanation for the difference. As usual, it's something simple made over-complicated. <img src="/forums/images/graemlins/lol.gif" alt="" />

Well, that would mean that fastener size and frictional forces are taken into consideration in the recommended torque value as published by the engineer to create the proper clamping force on the material..... well, that's so simple it's comical, eh? <img src="/forums/images/graemlins/lol.gif" alt="" /> <img src="/forums/images/graemlins/lol.gif" alt="" /> Of course they are.. <img src="/forums/images/graemlins/lol.gif" alt="" /> <img src="/forums/images/graemlins/lol.gif" alt="" /> I think I'll go back to sleep now. <img src="/forums/images/graemlins/sleeping.gif" alt="" />

Frank

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