MAINTENANCE AND SERVICING
7.2 Torque Spe
cifications
The following
tables give correct torque values for various bolts, cap screws, and hydraulic fittings.
• Tighten all bo
ltstothetorquesspecified in chart (unless otherwise noted throughout this manual).
• Replace hard
ware with the same s trength and grade bolt.
• Check tightn
ess of bolts periodically, using the tables below as a guide.
• Torque categ
ories for bolts and cap screws are identified by their head markings.
7.2.1 SAE Bo
lt Torque Specifications
Torque valu
es shown in this table are valid for non-greased,
or non-oil
ed threads and heads. Therefore, do NOT grease
or oil bolt
s or cap screws unless otherwise specified in
this manua
l.
Table 7.1
SAE Grade 5 Bolt and Grade 5 Free Spinning
Torque (ft·lbf)
(*in·lbf)
Torque (N·m)
Nominal
Size (A)
Min. Max. Min. Max.
1/4-20 *106 *117
11.9 13.2
5/16-18 *218 *241
24.6 27.1
3/8-16
32 36 44 48
7/16-14
52
57
70
77
1/2-13
79 87 106 118
9/16-12
114 126 153 170
5/8-11
157 173 212 234
3/4-10
281 311 380 420
7/8-9
449 496 606 669
1-8 611 676 825 912
Figure 7.1
A-NominalSize B-SAE-8
C - SAE-5 D - SAE-2
169457 1
00
Rev. F
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