Bolt Torque & Preload Calculator
Calculate tightening torque, preload, and safety factor for metric and imperial fasteners.
Bolt Geometry
mm
mm
Conditions
60% conservative90% aggressive
Results
Tightening Torque
50.45N·m
Tensile stress area
57.99mm²
Proof load
33633.9N
Target preload
25225.4N
Tensile stress
435.0MPa
Safety factor
1.33WARN
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