DETERMINING REQUIRED TIGHTENING
TORQUE FOR A BOLTED JOINT

With this method, you may determine

• The bolt-tightening torque required for one bolted joint.

 Furthermore you will be able to:

• Check your tightening torque for a bolted joint design modifying some one of the parameters as follows:
  · Nominal Bolt diameter.
  · Allowable Stress (Steel bolts).
  · Thickness.
  · Diameter.
  · Thread .
  

  Notes:
  - Allowable Stress: Maximum allowable stress for the weakest component in the fastening system. DO NOT USE VALUES HIGHER THAN 80% OF YIELD STRESS!
  - YOU MUST CONSULT THE MANUFACTURER'S SPECIFICATIONS FOR THE PROOF STRENGTHS OF THE ACTUAL FASTENERS USED BEFORE APPLYING THE METHOD RESULTS IN A FINAL DESIGN.
  - This method uses a Friction coefficient corresponding to typical values "as received" of 0.20.
  

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EXIT DATA SHEET IS AS FOLLOWS :

INPUT FOR CALCULATION METHOD
DETERMINING REQUIRED TIGHTENING
TORQUE FOR A BOLTED JOINT