Tightening Torque

User manual of the MechCalc VDI 2230-1 single-bolt joint calculator: what it can and cannot calculate, the inputs of the eleven cards, the calculation steps R0 to R13, the result criteria and the limits.

The lower half of the VDI 2230 calculation chain — six strength checks (assembly stress, service stress, fatigue, bearing pressure, engagement depth, slip) plus the tightening torque R13. Each check's physical meaning, formula and safety factor explained one by one.