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  • Screw Torque

    Discussion in 'Calculations' started by bt.darshan, Jan 22, 2013.

    1. bt.darshan

      bt.darshan New Member

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      What’s the formula to find torque required for screwing machine screw to plastic boss & also to metal insert
       
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    3. swertel

      swertel Active Member

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    4. bt.darshan

      bt.darshan New Member

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    5. tomatlots

      tomatlots Member

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      All the formulas are approximate, as there is considerable variation in materials, thread form facters, pilot hole sizes, etc.
      Your best bet is to get a torque wrench (borrow from any engine builder or get one on-line for ~$20 or less) and do some actual measurements. You will note that there will be considerable stick-slip exibited, so turning speed will have an effect.
       
    6. deecee

      deecee New Member

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      Thanks really helpful for me too!
       

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