Input
Value
Units
Nominal Diameter:
Pitch:
K Factor:
Proof Load Stress (yield):
Length of Engagement:
Torque Recommendations for Metric and Fractional System: Click Here
Torque Calculation Work Sheet
English Units
NOM
  • .5
TPI
  • 1
K Factor
  • 1
Proof Load Stress or Yield Requirement
  • 1
Length of Engagement
  • 1
Result
  • Inches = 0 Ft-lb
Proof Load Calculation
  • Proof Load Stress: PSI
  • Stress Area: 2
  • Proof Load: Pounds
Clamp Load Calculation
  • Proof Load: Pounds
  • Percent of Proof: %
  • Clamp Load: Pounds
Standard Torque Calculation
  • Clamp Load: Pounds
  • Bolt Diameter: Inches
  • K Factor: 1
  • Torque: Ft-lb
Spiralock Torque Calculation
  • Torque: Ft-lb
  • +10 % for SL: Ft-lb
  • Torque: Ft-lb (Dry)
Length of Engagement Correction
  • Torque: Ft-lb
  • Percent Engagement: %
  • Corrected Torque: Ft-lb
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These torque values are recommended starting values. Trial assembly should be tested for actual results.