Standard torques for metric threads

Stolen from Northern Precision's website.

Strength Class M2x0.4 M2.5×0.45 M3x0.5 M3.5×0.6 M4x0.7 M5x0.8 M6x1.0 M8x1.25 M10x1.5 M12x1.75
4:6 0.17 0.36 0.57 1 1.3 2.7 4.5 11 21.8 38.1
4:8 0.17 0.36 0.76 1 1.8 3.6 6 14 29 50.8
5:6 0.17 0.36 0.71 1 1.7 3.3 5.7 13.8 27.3 47.6
5:8 0.17 0.36 0.95 1 2.2 4.5 7.6 18.4 36.4 64
6:6 0.17 0.36 0.85 1 2 4 6.8 16.5 32.8 57
8:8 0.31 0.65 1.5 1.8 3.5 7.1 12.1 29.4 58.3 101
9:8 0.31 0.65 1.7 1.8 4 8 13.6 33.1 66 114
10:9 0.42 0.86 2.1 2.4 5 10 17 41.3 82 143
12:9 0.42 0.86 2.6 2.4 6 12 20.4 49.6 98 171