Kioti KL120 - Page 57

TORQUE TIGHTENING CHART 12-3
TORQUE TIGHTENING CHART 2
METRIC FASTENER (ISO) TORQUE CHART
Note : Use these torques, unless special torques are specified. Values are for course thread fasteners, plated or unplated as received
from supplier. Fasteners can be dry or lubricated with normal engine oil. Values do not apply if graphite, moly-disulphide or other
extreme pressure lubricant is used.
ISO Class No. 8.8 10.9 12.9
Bolt Size
Bolt head identification
(see note 1)
M4
M5
M6
M8
M10
M12
*M14
M16
M20
M24
M30
M36
Min. Min. Min. Min. Min. Min.Max. Max. Max. Max. Max. Max.
3
6.5
10.5
26
52
90
144
217
434
675
1250
2175
4
8
12
31
61
107
172
271
515
815
1500
2600
2
5
8
19
38
66
106
160
320
500
920
1600
3
6
9
23
45
79
127
200
380
600
1100
1950
4
9.5
15
37
73
125
200
310
610
1050
2000
3500
5
11
17.5
43
87
150
245
380
730
1275
2400
4200
3
7
11
27
54
93
149
230
450
780
1470
2580
4
8
13
32
64
112
179
280
540
940
1770
3090
Because of the low ductility of
these fasteners, the torque
range is to be determined
individually for each
application. As a general rule,
the torque ranges specified
for grade 10.9 fasteners can
be used satisfactorily on 12.9
fasteners.
* M14 is not a preferred size.
Note 1: Bolt head identification marks as per grade. Manufacturing marks will vary. *Thick nuts must be used with Grade 8 bolts.
8.8 10.9 12.9
Nm
FT LBS
Nm
FT LBS
Nm
FT LBS