KIT 4K4618 - Caterpillar

Table 4
Inch Nuts and Bolts (UNC)
Thread Size
Inch Torque
Grade 8
Dry Wet
#8 2.0 N m (1.5 lb ft) 1.5 N m (1.1 lb ft)
#10 4 N m (3 lb ft) 3.1 N m (2.3 lb ft)
1/4 16 N m (12 lb ft) 12 N m (9 lb ft)
5/16 34 N m (25 lb ft) 26 N m (19 lb ft)
3/8 54 N m (40 lb ft) 41 N m (30 lb ft)
7/16 88 N m (65 lb ft) 68 N m (50 lb ft)
1/2 129 N m (95 lb ft) 98 N m (72 lb ft)
9/16 172 N m (127 lb ft) 129 N m (95 lb ft)
5/8 271 N m (200 lb ft) 203 N m (150 lb ft)
3/4 502 N m (370 lb ft) 373 N m (275 lb ft)
7/8 780 N m (575 lb ft) 583 N m (430 lb ft)
1 1152 N m (850 lb ft) 868 N m (640 lb ft)
Table 5
NPT and NPTF Threaded Joints
Size
inch Threads per Inch Torque(1)
Dry(2) Wet
1-16 27 11 N m (8 lb ft) 11 N m (8 lb ft)
1/8 27 16 N m (12 lb ft) 16 N m (12 lb ft)
1/4 18 20 N m (15 lb ft) 24 N m (18 lb ft)
3/8 18 35 N m (26 lb ft) 45 N m (33 lb ft)
1/2 14 45 N m (33 lb ft) 60 N m (44 lb ft)
3/4 14 60 N m (44 lb ft) 74 N m (55 lb ft)
1 11.5 74 N m (55 lb ft) 89 N m (66 lb ft)
(1) Use 50% of the recommended torque when either portion of the threaded connector is nonferrous.
(2) Adhesive refers to either the thread lock compound or the thread sealant.