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BX24, RCK54(P)-23BX, RCK60B-23BX, LA240, BT601, WSM
[3] TIGHTENING TORQUES (GENERAL USE SCREWS, BOLT 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
bolt
Material of bolt
Material of opponent
Ordinariness
part
Unit
N·m
Diameter
7.85
M6
to
(6 mm, 0.24 in.)
9.31
17.7
M8
to
(8 mm, 0.31 in.)
20.5
39.3
M10
to
(10 mm, 0.39 in.)
45.1
62.8
M12
to
(12 mm, 0.47 in.)
72.5
108
M14
to
(14 mm, 0.55 in.)
125
167
M16
to
(16 mm, 0.63 in.)
191
246
M18
to
(18 mm, 0.71 in.)
284
334
M20
to
(20 mm, 0.79 in.)
392
American standard cap screw with UNC or UNF threads.
Grade
Unit
Nominal Diameter
5/16
23.1 to 27.8
3/8
47.5 to 57.0
1/2
108.5 to 130.2
9/16
149.2 to 179.0
5/8
203.4 to 244.1
No-grade or 4T
SS400, S20C
Aluminum
kgf·m ft-lbs
N·m
kgf·m ft-lbs
0.80
5.79
7.85
0.80
to
to
to
to
0.95
6.87
8.82
0.90
1.8
13.1
16.7
1.7
to
to
to
to
2.1
15.1
19.6
2.0
4.0
29.0
31.4
3.2
to
to
to
to
4.6
33.2
34.3
3.5
6.4
46.3
to
to
–
–
7.4
53.5
11.0
79.6
to
–
–
to
12.8
92.5
17.0
123
to
to
–
–
19.5
141
25.0
181
to
to
–
–
29.0
209
34.0
246
to
to
–
–
40.0
289
SAE GR.5
N·m
kgf·m
2.35 to 2.84
4.84 to 5.82
11.07 to 13.29
15.22 to 18.27
20.75 to 24.91
S43C, S48C
Ordinariness
N·m
kgf·m ft-lbs
5.79
9.81
1.00
7.24
to
to
to
to
6.50
11.2
1.15
8.31
12.3
23.6
2.4
17.4
to
to
to
to
14.4
27.4
2.8
20.2
23.2
48.1
4.9
35.5
to
to
to
to
25.3
55.8
5.7
41.2
77.5
7.9
57.2
–
to
to
to
90.2
9.2
66.5
124
12.6
91.2
–
to
to
to
147
15.0
108
197
20.0
145
–
to
to
to
225
23.0
166
275
28.0
203
–
to
to
to
318
32.5
235
368
37.5
272
–
to
to
to
431
44.0
318
ft-lbs
N·m
17.0 to 20.5
32.5 to 39.3
35.0 to 42.0
61.0 to 73.2
80.0 to 96.0
149.2 to 179.0
110.0 to 132.0
217.0 to 260.4
150.0 to 180.0
298.3 to 358.0
7-S3
ROTARY MOWER
7T
SCr435,
SCM435
Aluminum
Ordinariness
N·m
kgf·m ft-lbs
N·m
kgf·m ft-lbs
7.85
0.80
5.79
12.3
1.25
to
to
to
to
8.82
0.90
6.50
14.2
1.45
17.7
1.8
13.1
29.5
to
to
to
to
20.5
2.1
15.1
34.3
39.3
4.0
29.0
60.9
to
to
to
to
44.1
4.5
32.5
70.6
62.8
6.4
46.3
103
10.5
to
to
to
to
72.5
7.4
53.5
117
12.0
167
17.0
–
–
–
to
196
20.0
260
26.5
–
–
–
to
304
31.0
344
35.0
–
–
–
to
402
41.0
491
50.0
–
–
–
to
568
58.0
SAE GR.8
kgf·m
3.31 to 4.01
24.0 to 29.0
6.22 to 7.47
45.0 to 54.0
15.22 to 18.27
110.0 to 132.0
22.14 to 26.57
160.0 to 192.0
30.44 to 36.53
220.0 to 264.0
KiSC issued 08, 2019 A
9T
9.05
to
to
10.4
3.0
21.7
to
to
3.5
25.3
6.2
44.9
to
to
7.2
52.0
76.0
to
to
86.7
123
to
to
144
192
to
to
224
254
to
to
296
362
to
to
419
W1034542
ft-lbs
W1016345
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