Calculate tightening torque and preload for hex head and socket head screws.
The calculation considers friction scatter, tool accuracy and scatter on preload.

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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Screw type
Clearance hole - ISO 273
Mechanical properties of material, thread size and friction
Property class of screw




Tool precision
Data used in calculation
Login N/mm²
Login mm
Login mm
Login mm
Login mm
Login mm
Login mm²
Results
Login Nm
Login kN
Login kN
Login kN
Login kN
Login %

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