TM 5-3805-291-23-2
TORQUE LIMITS - CONTINUED
0234 00
METRIC (ISO) FASTENERS
CAU T I ON
If replacement capscrews are of higher grade than originally supplied, use torque specifications for origi-
nal. This will prevent equipment damage due to over-torquing.
N OT E
The following tables have recommended standard torque values for metric nuts and bolts for use on Cater-
pillar engines.
ENGLISH (SAE) FASTENERS
427-C2063
Table 1. English (SAE) Nuts and Bolts.
Thread Size (mm)
Torque
1/4
9 2 lb-ft (12 3 Nm)
5/16
18 4 lb-ft (24 8 Nm)
3/8
35 7 lb-ft (47 9 Nm)
7/16
50 11 lb-ft (68 15 Nm)
1/2
75 15 lb-ft (101 20 Nm)
9/16
120 22 lb-ft (163 30 Nm)
5/8
160 30 lb-ft (217 41 Nm)
3/4
275 37 lb-ft (373 50 Nm)
7/8
460 60 lb-ft (624 81 Nm)
1
660 75 lb-ft (895 102 Nm)
1 1/8
960 110 lb-ft (1,302 149 Nm)
1 1/4
1,320 150 lb-ft (1,790 203 Nm)
1 3/8
1,780 220 lb-ft (2,413 298 Nm)
1 1/2
2,280 260 lb-ft (3,091 353 Nm)
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