00 Hex-head Flange Nut Unit: N·m (kgf·m) [lbf·ft] 00-15 Strength classification 4T Repre- sentation Diameter symbol 02155 Standard screw Coarse screw M6 4 to 6 (0.4 to 0.6) [3.69 to 5.16] – M8 10 to 15 (1.0 to 1.5) [2.95 to 4.43] – M10 21 to 30 (2.1 to 3.1) [7.38 to 11.1] 20 to 28 (1.9 to 2.9) [28.0 to 39.8] M12 38 to 54 (3.8 to 5.5) [15.5 to 22.1] 35 to 51 (3.4 to 5.2) [14.8 to 20.6]