if i have M20x100 how many torque is needed?
Could you explain to me its formula?
(This thread belongs in Engineering - hint to moderator ;) )
My copy of Machinery's Handbook 26th Edition, pp 135 and 1475-1491 go through all of this. I'd suggest that you go to a library or consult your own copy of any edition.
The reason is: the application itself, the bolt rating, bolt coating, and lubricant can change the values.
This is not a simple question to answer. There is no right answer for all situations. The answer depends on:
- The joint design
- The joint load
- The number of fasteners involved
- The pretension required in the bolt
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