Tightening Torque Tightening Torque Table of Standard Parts NOTE: The torques shown in the table are standard vales under the following conditions. 1. Nuts and bolt are made of steel bar and galvanized. 2. Galvanized plain steel washers are inserted. 3. All nuts, bolts, plain washers are dry. NOTE: The torques shown in the table are not applicable, 1. When spring washers, toothed washers and the like are inserted. 2. If plastic parts are fastened. 3. If oil is applied to threads and surfaces. NOTE: If you reduce the torques in the table to the percentage indicated below under the following conditions, it will be the standard value. 1. If spring washers are used : 85% 2.
If threads and bearing surfaces are stained with oil: 85% G643(E) Service Manual Chapter 1. General Information 10 Bolt nominal diameter (mm) Pitch (mm) Torque (kg·m) Head mark 4 Head mark 7 M5 0.8 0.3 ~ 0.4 0.5 ~ 0.6 M6 1.0 0.5 ~ 0.6 0.9 ~ 1.1 M8 1.25 1.2 ~ 1.5 2.0 ~ 2.5 M10 1.25 2.5 ~ 3.0 4.0 ~ 5.0 M12 1.25 3.5 ~ 4.5 6 ~ 8 M14 1.2 7.5 ~ 8.5 12 ~ 14 M16 1.5 11 ~ 13 18 ~ 21 M18 1.5 16 ~ 18 26 ~ 30 M20 1.5 22 ~ 25 36 ~ 42 M22 1.5 29 ~ 33 48 ~ 55 M24 1.5 37 ~ 42 61 ~ 70 M5 0.8 0.3 ~ 0.4 0.5 ~ 0.6 M6 1.0 0.5 ~ 0.6 0.9 ~ 1.1 M8 1.25 1.2 ~ 1.5 2.0 ~ 2.5 M10 1.25 2.5 ~ 3.0 4.0 ~ 5.0