Extract of the VDI guideline 2230 / DIN 2505 yellow print
The tightening torque for rigid or expansion bolts is calculated on the basis of the required bolt force in the installation state, which can be calculated from AD leaflet B7 or DIN 2505, as well as the bolt geometry and friction coefficients.
The tightening torque calculated in this module is the sum of the head friction torque and the thread friction torque.
- Dubbel: “Taschenbuch für den Maschinenbau”, 16. edition, Springer-Verlag
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