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GB/T 5781-2016
Hexagon head bolts-Full thread
Nom
P
da max
e min
k max
k min
r min
s max
s min
M5
0.8
6
8.63
3.875
3.125
0.2
8
7.64
M6
1
7.2
10.89
4.375
3.625
0.25
10
9.64
M8
1.25
10.2
14.2
5.675
4.925
0.4
13
12.57
M10
1.5
12.2
17.59
6.85
5.95
0.4
16
15.57
M12
1.75
14.7
19.85
7.95
7.05
0.5
18
17.57
M14
2
16.7
22.78
9.25
8.35
0.6
21
20.16
M16
2
18.7
26.17
10.76
9.25
0.6
24
23.16
M18
2.5
21.2
29.56
12.4
10.6
0.6
27
26.16
M20
2.5
24.4
32.95
13.4
11.6
0.8
30
29.16
M22
2.5
26.4
37.29
14.9
13.1
0.8
34
33
M24
3
28.4
39.55
15.9
14.1
0.8
36
35
M27
3
32.4
45.2
17.9
16.1
1
41
40
M30
3.5
35.4
50.85
19.75
17.65
1
46
45
M33
3.5
38.4
55.37
22.05
19.95
1
50
49
M36
4
42.4
60.79
23.55
21.45
1
55
53.8
M39
4
45.4
66.44
26.05
23.95
1
60
58.8
M42
4.5
48.6
71.3
27.05
24.95
1.2
65
63.1
M45
4.5
52.6
76.95
29.05
26.95
1.2
70
68.1
M48
5
56.6
82.6
31.05
28.95
1.6
75
73.1
M52
5
62.6
88.25
34.25
31.75
1.6
80
78.1
M56
5.5
67
93.56
36.25
33.75
2
85
82.8
M60
5.5
71
99.21
39.25
36.75
2
90
87.8
M64
6
75
104.86
41.25
38.75
2
95
92.8
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