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Operation Manual

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BX25, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM
G GENERAL
5.
TIGHTENING TORQUES
[1]
GENERAL USE SCREWS, BOLTS AND NUTS
Screws, bolts, and
nuts
whose tightening torques are
not
specified in
this
Workshop Manual should be
tightened according
to
the
table below.
Indication on
top
of
0
@
No-grade
or
4T
ill
7T
®
9T
bolt
Material
of
bolt
SS400,S20C S43C,S48C
SCr435,
SCM435
Material
of
opponent
Ordinariness
Aluminum
Ordinariness
Aluminum
Ordinariness
part
~t
Diameter
N'm
kgf'm
IbHt
N'm
kgf·m
IbNt
I
N'm
kgf·m
IbHt
N'm
kgf'm
IbHt
N'm
kgf'm
IbHt
M6
7.9
0.80
5.8 7.9 0.80 5.8
9.81
1.00
7.24
7.9 0.80 5.8
12.3
1.25 9.05
(6
mm, 0.24 in.)
to
to
to
to to to
to
to to to to to to
to
to
9.3 0.95 6.8 8.8 0.90 6.5
11.2
1.15
8.31
8.8 0.90 6.5 14.2 1.45 10.4
M8
18 1.8 13 17 1.7 13 24 2.4
18
18
1.8
13
30
3.0 22
(8
mm,
0.31
in.)
to
to to to
to
to to
to
to
to to
to
to to to
20
2.1
15
19
ltt14
27 2.8 20
20
2.1
15 34 3.5 25
M10
40
4.0
29
32
24 48
4.9
36
40
4.0
29
61
6.2
45
(10
mm,
0.39 in.)
to to
to to t to
to
to t
to
to
to
to
to
to
45
4.6
33
34
3.5 25 55
5.7 44
4.5 32
70
7.2
52
M12
63 6.4 47 78 7.9 58 63 6.4
47 103 10.5
76.0
(12
mm,
0.47 in.)
to
to
to
-
-
-
to to to
to
to
to
to
to
to
72
7.4 53 90
9.2 66 72
7.4
53
117
m
M14
108
11.0
124
12.6 91.2 167 17. 123
(14 mm, 0.55 in.)
to
to
- -
to
to
to
-
-
to
to
125
12.8
92.5
147
15.0 108
196 20.0
M16
167
17.0 123 197 20.0 145 260
26.5 192
(16
mm,
0.63 in.)
to
to to
-
to
to
to
-
to
to
to
191
19.5
141
225 23.0 304 31.0 224
M18
246 25.0
181
275 28.0 344 35.0 254
(18
mm,
0.71
in.)
to
to
to
- -
to
to
-
to
to
to
284 29.0 209 318 32.5
235 402
41.0
296
M20
334 34.0
246
368
37.5 272
491
50.0 362
(20
mm,
0.79 in.)
to to to
-
to to to
-
- to
to
to
392 40.0 289
431
44.0 318 568 58.0 419
W1034542
[2]
STUD BOLTS
Material
of
opponent
part
Ordinariness
Aluminum
~it
; Diameter
N'm
kgf·m
IbHt
N'm
kgf'm
IbHt
I
M8
(8 mm,
0.31
in.)
12
to
15
1.2
to
1.6
8.7
to
11
8.9
to
11
0.90
to
1.2
6.5
to
8.6
M10
(10
mm,
0.39 in.)
25
to
31
2.5
to
3.2
18
to
23
20
to
25
2.0
to
2.6
15
to
18
M12
(12
mm,
0.47 in.)
29.5
to
49.0
3.0
to
5.0
21.7
to
36.1
31.4 3.2
23.1
M14
(14
mm,
0.55 in.)
62
to
73
6.3
to
7.5
46
to
54
-
M16
(16 mm, 0.63 in.)
98.1
to
112
10.0
to
11.5
72.4
to
83.1
- -
M18
(18
mm,
0.71
in.)
172
to
201
17.5
to
20.5
127
to
148
-
W1048139
G-8