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GB/T 32076.7-2015
High-strength structural bolting saaemblies for preloading-Part 7:System HV-Hexagon bolt with large width across flats and nut assemblies M39～M64
Nom
P
da max
ds min
ds max
e min
k min
k max
r min
s max
s min
M39
4
45
38.0
40.0
71.3
23.95
26.05
2.5
65
63.1
M42
4.5
48
41.0
43.0
76.95
24.95
27.05
2.5
70
68.1
M45
4.5
52
44.00
46.0
82.6
26.95
29.05
3
70
68.1
M48
5
55
47.00
49.0
88.25
28.95
31.05
3
80
78.1
M52
5
60
51.00
53.0
93.79
31.75
34.25
3.5
85
83
M56
5.5
64.2
54.80
57.2
99.2
33.75
36.25
3.5
90
87.8
M64
6
73.2
62.80
65.2
110.5
38.75
41.25
4
100
97.8
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