MacDon R80 - Recommended Torques

Form # 169080 Issue – April 2007
4
RECOMMENDED TORQUES
I. 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 and heads unless
otherwise specified. Do not grease or oil
bolts or capscrews unless specified in this
manual. When using locking elements,
increase torque values by 5%.
II. SAE BOLTS
Bolt
Dia.
"A"
NC Bolt Torque*
SAE 5
SAE 8
lb-ft
N·m
lb-ft
N·m
1/4"
9
12
11
15
5/16"
18
24
25
34
3/8"
32
43
41
56
7/16"
50
68
70
95
1/2"
75
102
105
142
9/16"
110
149
149
202
5/8"
150
203
200
271
3/4"
265
359
365
495
7/8"
420
569
600
813
1"
640
867
890
1205
* Torque categories for bolts and capscrews are
identified by their head markings.
III. METRIC BOLTS
BOLT
DIA.
"A"
NC BOLT TORQUE*
8.8 10.9
lb-ft N·m lb-ft N·m
M3
0.4
0.5
1.3
1.8
M4 2.2 3 3.3 4.5
M5
4
6
7
9
M6 7 10 11 15
M8 18 25 26 35
M10
37
50
52
70
M12 66 90 92 125
M14
103
140
148
200
M16 166 225 229 310
M20 321 435 450 610
M24
553
750
774
1050
M30 1103 1495 1550 2100
M36
1917
2600
2710
3675
* Torque categories for bolts and capscrews are
identified by their head markings.
SAE-5
SAE-8
8.8
10.9