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Torque and Preload Calculator

Calculate tightening torque, preload and surface pressure for hex head and socket head screws.

Based on VDI 2230:2014 

 

Screw Type


Clearance Hole ISO 273


Data
Data used in calculation
640
N/mm²
0.8
mm
4.48
mm
4.019
mm
5.5
mm
6.9
mm
14.183
mm²
Result
Maximum allowable tightening torque: 6.17 Nm
Maximum possible preload: 7.60 kN
Maximum surface pressure under screw head/nut: 557.59 N/mm²

Verify your calculation, maximize potential of your product.

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