POWER TRAIN AR 2676872 - Caterpillar

Note: Use 50 percent of the torque values from Table 2 when the fitting or the port material is nonferrous.
Table 3
Metric Ferrous Straight Thread O-Ring Fittings
Torques for Mating with Ferrous Materials
Medium Pressure use Fittings
Ref Nominal Outer Diameter of the Tube Thread
Size Standard
Torque
Tolerance
4 mm M8 X 1 10 2 N m (89 18 lb in)
5 mm M10 X 1 17 3 N m (150 27 lb in)
6 mm M12 X 1.5 30 5 N m (266 44 lb in)
8 mm M14 X 1.5 35 5 N m (26 4 lb ft)
10 mm M16 X 1.5 45 7 N m (33 5 lb ft)
12 mm M18 X 1.5 50 8 N m (37 6 lb ft)
16 mm M22 X 1.5 80 12 N m (59 9 lb ft)
20 mm M27 X 2 120 18 N m (89 13 lb ft)
22 mm M30 X 2 160 24 N m (118 18 lb ft)
25 mm M33 X 2 180 27 N m (133 20 lb ft)
30 mm M42 X 2 260 39 N m (192 29 lb ft)
38 mm M48 X 2 300 45 N m (221 33 lb ft)
50 mm M60 X 2 350 53 N m (258 39 lb ft) Note: Use 50 percent of the torque values from Table 3 when the fitting or the port material is nonferrous.
Table 4
Metric Ferrous Straight Thread O-Ring Fittings
Torques for Mating with Ferrous Materials
High Pressure use Fittings
Ref Nominal Outer Diameter of the Tube Thread
Size Standard
Torque
Tolerance
5 mm M10 X 1 20 3 N m (177 27 lb in)
6 mm M12 X 1.5 40 6 N m (30 4 lb ft)
8 mm M14 X 1.5 50 8 N m (37 6 lb ft)
10 mm M16 X 1.5 60 9 N m (44 7 lb ft)
12 mm M18 X 1.5 80 12 N m (59 9 lb ft)
16 mm M22 X 1.5 140 21 N m (103 15 lb ft)
20 mm M27 X 2 220 33 N m (162 24 lb ft)
22 mm M30 X 2 260 39 N m (192 29 lb ft)
25 mm M33 X 2 350 53 N m (258 39 lb ft)
30 mm M42 X 2 400 60 N m (295 44 lb ft)
38 mm M48 X 2 420 63 N m (310 46 lb ft)
50 mm M60 X 2 500 75 N m (369 55 lb ft) Note: Use 50 percent of the torque values from Table 4 when the fitting or the port material is nonferrous.