Recommended Torques; General; Sae Bolts; Metric Bolts - MacDon M105 Assembly Instructions Manual

RECOMMENDED TORQUES

A. GENERAL
The tables shown below give correct torque
values for various bolts and capscrews.
Tighten all bolts to the torques specified in
•
chart, unless otherwise noted throughout
this manual.
• Check tightness of bolts periodically, using
bolt torque chart as a guide.
• Replace hardware with the same strength
bolt.
Torque figures are valid for non-greased or
•
non-oiled threads
otherwise specified. Do not grease or oil
bolts or capscrews unless specified in this
manual.
• When using locking elements, increase
torque values by 5%.
B. SAE BOLTS
BOLT DIA.
"A" SAE-5
(in.)
lbf∙ft
1/4 9
5/16 18
3/8 32
7/16 50
1/2 75
9/16 110
5/8 150
3/4
265
7/8 420
1 640
* Torque categories for bolts and capscrews are identified by
their head markings.
Form 169558

GENERAL

and heads unless
NC BOLT TORQUE*
SAE-8
N·m lbf∙ft N·m
12 11 15
24 25 34
43 41 56
68 70 95
102 105 142
149 149 202
203 200 271
365 495
359
569 600 813
867 890 1205
SAE-5 SAE-8
C. METRIC BOLTS
BOLT
DIA. "A"
lbf∙ft
M3 0.4
M4 2.2
M5 4
M6 7
M8 18
M10 37
M12 66
M14 103
M16 166
M20 321
M24 553
M30 1103
M36 1917
* Torque categories for bolts and capscrews are identified by
their head markings.
4
STD COARSE BOLT TORQUE*
8.8 10.9
N·m lbf∙ft
0.5 1.3
3 3.3
6 7
10 11
25 26
50 52
90 92
140 148
225 229
435 450
750 774
1495 1550
2600 2710
N·m
1.8
4.5
9
15
35
70
125
200
310
610
1050
2100
3675
Revision A