Specifications, Bolt.torque – Echo 7812086 Owners Manual v.3 User Manual
Page 26
12 INCH CHIPPER
22
Section
Specifications
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. Check tightness of bolts periodically, using this bolt torque chart as a guide.
Fasteners should be replaced with the same grade. Tighten serrated or center-lock nuts to the full torque value. Do
not use these values if a different torque value or tightening procedure is given for a specific application. Torque values
listed are for general use only.
* Torque value for bolts and capscrews are identified by their head markings.
Torque figures indicated above are valid for non-greased or non-oiled threads and heads unless otherwise specified. Therefore,
do not grease or oil bolts or capscrews unless otherwise specified in this manual. when using locking elements, increase torque
values by 5%.
bolt.Diameter.
(a)
enGliSh
bolt.torQue.*
Sae.2
Sae.5
Sae.8
n.m
ft-lb.
n.m
ft-lb.
n.m
ft-lb.
1/4"
7.5
5.5
11
8
16
12
5/16"
15
11
23
17
34
25
3/8"
27
20
41
30
61
45
7/16"
41
30
68
50
95
70
1/2"
68
50
102
75
149
110
9/16"
97
70
149
110
203
150
5/8"
122
90
203
150
312
230
3/4"
217
160
353
260
515
380
7/8"
230
170
542
400
814
600
1"
298
220
786
580
1220
900
1-1/8"
407
300
1085
800
1736
1280
1-1/4"
570
420
2631
1940
2468
1820
bolt.Diameter.
(a)
metriC
bolt.torQue.*
4.8
8.8
10.9
12.9
n.m
ft-lb.
n.m
ft-lb.
n.m
ft-lb.
n.m
ft-lb.
M3
0.5
0.4
-
-
-
-
-
-
M4
3
2.2
-
-
-
-
-
-
M5
5
4
-
-
-
-
-
-
M6
6
4.5
11
8.5
17
12
19
14.5
M8
15
11
28
20
40
30
47
35
M10
29
21
55
40
80
60
95
70
M12
50
37
95
70
140
105
165
120
M14
80
60
150
110
225
165
260
190
M16
125
92
240
175
350
255
400
300
M18
175
125
330
250
475
350
560
410
M20
240
180
475
350
675
500
800
580
M22
330
250
650
475
925
675
1075
800
M24
425
310
825
600
1150
850
1350
1000
M27
625
450
1200
875
1700
1250
2000
1500
A
4.8
8.8
10.9
12.9
A
SAE - 2
SAE - 5
SAE - 8
7
7.1..bolt.torQue