There are two kinds of ISO metric threads: coarse and fine. Both have the same profiles.
Nominal Size Iso Mf Major Diameter Mm D=d Pitch Mm P Root Radius Mm R Pitch Diameter Mm D2=d2 Minor Diameter Male D3 Minor Diameter Female D1 Thread Depth Male mm Thread Depth Female mm Tap Drill Diameter Mm
1.0 1.00 0.25 0.04 0.84 0.69 0.73 0.15 0.14 0.8
1.1 1.10 0.25 0.04 0.94 0.79 0.83 0.15 0.14 0.9
1.2 1.20 0.25 0.04 1.04 0.89 0.93 0.15 0.14 1.0
1.4 1.40 0.30 0.04 1.21 1.03 1.08 0.18 0.16 1.1
1.6 1.60 0.35 0.05 1.37 1.17 1.22 0.22 0.19 1.3
1.8 1.80 0.35 0.05 1.57 1.37 1.42 0.22 0.19 1.5
2.0 2.00 0.40 0.06 1.74 1.51 1.57 0.25 0.22 1.6
2.2 2.20 0.45 0.07 1.91 1.65 1.71 0.28 0.24 1.8
2.5 2.50 0.45 0.07 2.21 1.95 2.01 0.28 0.24 2.1
3.0 3.00 0.50 0.07 2.68 2.39 2.46 0.31 0.27 2.5
3.5 3.50 0.60 0.09 3.11 2.76 2.85 0.37 0.33 2.9
4.0 4.00 0.70 0.10 3.55 3.14 3.24 0.43 0.38 3.3
4.5 4.50 0.75 0.11 4.01 3.58 3.69 0.46 0.41 3.8
5.0 5.00 0.80 0.12 4.48 4.02 4.13 0.49 0.43 4.2
6.0 6.00 1.00 0.14 5.35 4.77 4.92 0.61 0.54 5.0