English
17
Bolt
Steel plate
thickness t
Explanation of strength grade:
4 — Yield point of bolt: 45,500 psi (32.6 kgf/mm
2
)
8 — Pulling strength of bolt: 56,900 psi (40.8 kgf/mm
2
)
*The following bolt is used.
Ordinary bolt: Strength grade 4.8
High tensile bolt: Hardness division 12.9
(
)
Fig. 14
Nut
Fig. 13
Tightening torque
Tightening time: sec.
(Steel plate thickness
t = 1 " (25 mm))
0
1
2
3
kgf·cm
in-lbs
1,400
(1,218)
1,200
(1,042)
1,000
(868)
800
(695)
600
(521)
400
(347)
200
(174)
0
N·m
140
120
100
80
60
40
20
0
15/32"
×
1-3/4"
(M12
×
45)
Tightening torque
Tightening time: sec.
(Steel plate thickness
t = 1 " (25 mm))
0
1
2
3
kgf·cm
in-lbs
1,600
(1,390)
1,400
(1,218)
1,200
(1,042)
1,000
(868)
800
(695)
600
(521)
400
(347)
200
(174)
0
N·m
160
140
120
100
80
60
40
20
0
9/16"
×
1-31/32"
(M14
×
50)
Ordinary bolt
High tension
bolt
High tension
bolt
Ordinary bolt
01Eng_WH14DBL_US
08/3/14, 16:52
17
Содержание WH14DBL
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