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GB/T 5782-2025
Hexagon head bolts
Nom
P
da max
ds max
ds min
e min
k max
k min
r min
s max
s min
M1.6
0.35
2
1.6
1.46
3.41
1.225
0.975
0.1
3.2
3.02
M2
0.4
2.6
2
1.86
4.32
1.525
1.275
0.1
4
3.82
M2.5
0.45
3.1
2.5
2.36
5.45
1.825
1.575
0.1
5
4.82
M3
0.5
3.6
3
2.86
6.01
2.125
1.875
0.1
5.5
5.32
M3.5
0.6
4.1
3.5
3.32
6.58
2.525
2.275
0.1
6
5.82
M4
0.7
4.7
4
3.82
7.66
2.925
2.675
0.2
7
6.78
M5
0.8
5.7
5
4.82
8.79
3.65
3.35
0.2
8
7.78
M6
1
6.8
6
5.82
11.05
4.15
3.85
0.25
10
9.78
M7
1
7.8
7
6.78
12.12
4.95
4.65
0.25
11
10.73
M8
1.25
9.2
8
7.78
14.38
5.45
5.15
0.4
13
12.73
M10
1.5
11.2
10
9.78
17.77
6.58
6.22
0.4
16
15.73
M12
1.75
13.7
12
11.73
20.03
7.68
7.32
0.6
18
17.73
M14
2
15.7
14
13.73
23.36
8.98
8.62
0.6
21
20.67
M16
2
17.7
16
15.73
26.75
10.18
9.82
0.6
24
23.67
M18
2.5
20.2
18
17.73
30.14
11.715
11.285
0.6
27
26.67
M20
2.5
22.4
20
19.67
33.53
12.715
12.285
0.8
30
29.67
M22
2.5
24.4
22
21.67
37.72
14.215
13.785
0.8
34
33.38
M24
3
26.4
24
23.67
39.98
15.215
14.785
0.8
36
35.38
M27
3
30.4
27
26.48
45.2
17.35
16.65
1.0
41
40
M30
3.5
33.4
30
29.48
50.85
19.12
18.28
1.0
46
45
M33
3.5
36.4
33
32.38
55.37
21.42
20.58
1.0
50
49
M36
4
39.4
36
35.38
60.79
22.92
22.08
1.0
55
53.8
M39
4
42.4
39
38.38
66.44
25.42
24.58
1.0
60
58.8
M42
4.5
45.6
42
41.38
71.3
26.42
25.58
1.2
65
63.1
M45
4.5
48.6
45
44.38
76.95
28.42
27.58
1.2
70
68.1
M48
5
52.6
48
47.38
82.6
30.42
29.58
1.6
75
73.1
M52
5
56.6
52
51.26
88.25
33.5
32.5
1.6
80
78.1
M56
5.5
63
56
55.26
93.56
35.5
34.5
2.0
85
82.8
M60
5.5
67
60
59.26
99.21
38.5
37.5
2.0
90
87.8
M64
6
71
64
63.26
104.86
40.5
39.5
2.0
95
92.8
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