Mechanics
Bolt preload from torque
Estimates bolt preload from tightening torque, nut factor K, and nominal diameter.
Related calculators
Bolt torque from preload
Estimates tightening torque from preload force, nut factor K, and nominal diameter.
Simple bolt joint load share
Calculates bolt stiffness, load-share factor, bolt load increase, remaining clamp force, and separation flag.
Bolt joint separation load
Calculates separation load from preload and the stiffness-based load-share factor.
Bolt preload stress
Calculates average bolt stress as preload divided by tensile stress area.
Bolt bearing pressure
Calculates average bearing pressure from force, bolt diameter, and plate thickness.
Bolt factor of safety
Calculates bolt safety factor as allowable stress divided by actual stress.