Metric Threading
K= Pitch       Minor Dia = X value
  mm Size    Pitch Decimal Equiv.   Major Diameter   Minor Diameter Minor Diameter
    K Value      tolerance: 4h tolerance: 6g
4mm 0.5mm 0.01968 0.15748 0.12881 0.13066
4mm 0.7.mm 0.02755 0.15748   0.11818 0.12039  
5mm 0.5.mm 0.01968 0.19685 0.16818 0.17003
5mm 0.7mm 0.03149 0.19685   0.15228 0.1546  
5.5mm 0.5mm 0.01968 0.21653 0.18972 0.18787
6mm 0.75mm 0.02952 0.23622   0.19637 0.19405  
6mm 1.mm 0.03937 0.23622 0.18358 0.18098
7mm 0.75mm 0.02952 0.27559   0.23574 0.23342  
7mm 1.0mm 0.03937 0.27559 0.22295 0.22031
8mm 1.0mm 0.03937 0.31496   0.26232 0.25968  
8mm 1.25mm 0.04921 0.31496   0.24972 0.24692  
9mm 1.25mm 0.04921 0.35433 0.0289 0.28629
10mm 1.25mm 0.04921 0.3937   0.32846 0.32566  
10mm 1.5mm 0.05905 0.3937   0.31566 0.31251  
11mm 1.5mm 0.05905 0.43307 0.35503 0.35188
12mm 1.25mm 0.04921 0.47244   0.40681 0.40381  
12mm 1.75mm 0.06889 0.47244 0.36885 0.37803
14mm 1.5mm 0.05905 0.55118   0.47291 0.46968  
14mm 2.0mm 0.07874 0.55118 0.44759 0.44373
16mm 1.5mm 0.05905 0.62992   0.55165 0.54842  
16mm 2.0mm 0.07874 0.62992 0.52633 0.52247
18mm 1.5mm 0.05905 0.70866   0.63039 0.62716  
18mm 2.5mm 0.09842 0.70866 0.65866 0.65448