Recommended Torques; General; Sae Bolts; Metric Bolts - MacDon Harvest Header D65 Assembly Instructions Manual

RECOMMENDED TORQUES

A. GENERAL
The tables shown below give correct torque
values for various bolts and cap screws.

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
strength bolt.

Torque figures are valid for non-greased or
non-oiled threads
otherwise specified. Do not grease or oil
bolts or cap screws unless specified in this
manual.

When using locking elements, increase
torque values by 5%.
B. SAE BOLTS
BOLT
DIA. "A"
SAE-5
(in.)
ft·lbf
1/4 9
5/16 18
3/8 32
7/16 50
1/2 75
9/16 110
5/8 150
265
3/4
7/8 420
1 640
* Torque categories for bolts and cap screws are identified by
their head markings.
169603
RECOMMENDED TORQUES
with the
and heads unless
NC BOLT TORQUE*
SAE-8
N·m ft·lbf N·m
12 11 15
34
24 25
56
43 41
68 70 95
102 105 142
149 149 202
203 200 271
359
365 495
569 600 813
867 890 1205
SAE-5 SAE-8
C. METRIC BOLTS
BOLT
DIA. "A"
M3
M4
M5
M6
same
M8
M10
M12
M14
M16
M20
M24
M30
M36
*
Torque categories for bolts and cap screws are identified by
their head markings.
6
STD COARSE BOLT TORQUE*
8.8
ft·lbf N·m ft·lbf
0.4 0.5 1.3
2.2 3 3.3
4 6 7
7 10 11
18 25 26
37 50 52
66 90 92
103 140 148
166 225 229
321 435 450
553 750 774
1103 1495 1550
1917 2600 2710
10.9
N·m
1.8
4.5
9
15
35
70
125
200
310
610
1050
2100
3675
Revision B