Calculate the theoretical minimum required thread engagement length for blind hole and through hole applications.

Based on VDI 2230:2014

Bossard calculators and converters are designed for engineers, technicians, designers and students involved in the development and assembly of bolted joints. 


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Joint Type

Screw Selection Screw


Counter Threaded Part
Data for calculation
Rm, screw Login required N/mm²
Rm, material internal thread Login required N/mm²
Tau, screw Login required N/mm²
Tau, internal thread Login required N/mm²
Breaking force, bolt Login required N
Stripping force, internal thread Login required N
Effective engagement length, mges vorh Login required mm

Calculated minimum engagement length needed, mges I:

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