Calculation of flange forces and bolting/gasket stresses
from the specified tightening torque
Input data
Pitch diameter of the screw thread
mm
Root/neck diameter of the bolt
mm
Thread pitch
mm
Half flank angle of the thread
°
Outer diameter of the bolt head or nut
mm
Through-hole diameter
mm
Number of flange bolts
Allowable stress for bolts
MPa
Inner diameter of the gasket
mm
Outer diameter of the gasket
mm
Inside pressure
bar(g)
Specified tightening torque
N·m
Friction coefficient combinations:
Combination number
Friction coefficient for the screw thread
Friction coefficient for the joint face
Comment
Calculate
Results
Combination number
Longitudinal bolt stress
MPa
Equivalent bolt stress
MPa
Stress efficiency for bolts
%
Bolt force (per bolt)
kN
Bolt force (total)
kN
Montage gasket pressure
MPa
Operating gasket pressure
MPa
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