SPRING 1145030 - Caterpillar

Metric (ISO) Nuts and Bolts
Illustration 1 g00909614Note: The following table has the recommended standard torque values for metric nuts and bolts for use on all Caterpillar equipment and Mitsubishi engines.
Table 1
Thread Size
mm Torque
M6 12 3 N m (105 27 lb in)
M8 28 7 N m (250 62 lb in)
M10 55 10 N m (41 7 lb ft)
M12 100 20 N m (75 15 lb ft)
M14 160 30 N m (120 22 lb ft)
M16 240 40 N m (175 30 lb ft)
M20 460 60 N m (340 44 lb ft)
M24 800 100 N m (590 75 lb ft)
M30 1600 200 N m (1180 150 lb ft)
M36 2800 350 N m (2060 260 lb ft) Note: The following table has the recommended standard torque values for metric nuts and bolts for use on Perkins engines.
Table 2
Thread Size
mm Torque
M6 5 N m (44 lb in)
M8 22 N m (195 lb in)
M10 44 N m (32 lb ft)
M12 78 N m (60 lb ft)
M14 124 N m (90 lb ft)
M16 177 N m (130 lb ft)
M18 200 N m (150 lb ft)
M20 400 N m (300 lb ft)
M24 790 N m (580 lb ft) Note: The difference between Caterpillar standard torque values and Perkins standard torque values are due to different classes of fasteners. Caterpillar uses class 10.9 fasteners. Perkins uses class 8.8 fasteners. The different class of fasteners have different tensile strengths.Metric (ISO) Machine Screws
Illustration 2 g00908932
Table 3
Thread Size
mm Torque
M2.5 0.40 0.10 N m (3.5 0.9 lb in)
M3 0.70 0.15 N m (6.2 1.3 lb in)
M4 1.70 0.40 N m (15.1 3.5 lb in)
M5 3.30 0.70 N m (29.2 6.2 lb in) Hex Button Head Screw and Set Screws
Illustration 3 g01186742
Table 4
Thread Size
mm Torque
M3 .6 .1 N m (5 0.9 lb in)
M4 2 .3 N m (18 3 lb in)
M5 4 .5 N m (35 4 lb in)
M6 6 1 N m (55 9 lb in)
M8 15 2 N m (135 18 lb in)
M10 30 7 N m (265 62 lb in)
M12 50 10 N m (37 7 lb ft)
M14 80 15 N m (60 11 lb ft)
M16 125 20 N m (90 15 lb ft)
M20 250 40 N m (185 30 lb ft)
M24 425 50 N m (310 37 lb ft)
M30 850 100 N m (620 75 lb ft)
M36 1500 200 N m (1100 150 lb ft)