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GB/T 2671.2-2017
6-Lobe knurled cap screws
Nom
P
dk max
dk min
da max
ds max
ds min
k max
k min
r min
No.
e
t max
t min
M2
0.4
3.98
3.62
2.6
2
1.86
2
1.86
0.1
T6
1.75
0.84
0.71
M2.5
0.45
4.68
4.32
3.1
2.5
2.36
2.5
2.36
0.1
T8
2.4
1.04
0.91
M3
0.5
5.68
5.32
3.6
3
2.86
3
2.86
0.1
T10
2.8
1.27
1.01
M4
0.7
7.22
6.78
4.7
4
3.82
4
3.82
0.2
T20
3.95
1.8
1.42
M5
0.8
8.72
8.28
5.7
5
4.82
5
4.82
0.2
T25
4.5
2.03
1.65
M6
1
10.22
9.78
6.8
6
5.82
6
5.7
0.25
T30
5.6
2.42
2.02
M8
1.25
13.27
12.73
9.2
8
7.78
8
7.64
0.4
T45
7.95
3.31
2.92
M10
1.5
16.27
15.73
11.2
10
9.78
10
9.64
0.4
T50
8.95
4.02
3.62
M12
1.75
18.27
17.73
13.7
12
11.73
12
11.57
0.6
T55
11.35
5.21
4.82
M14
2
21.33
20.67
15.7
14
13.73
14
13.57
0.6
T60
13.45
5.99
5.62
M16
2
24.33
23.67
17.7
16
15.73
16
15.57
0.6
T70
15.7
7.01
6.62
M18
2.5
27.33
26.67
20.2
18
17.73
18
17.57
0.6
T80
17.75
8
7.5
M20
2.5
30.33
29.67
22.4
20
19.67
20
19.48
0.8
T90
20.2
9.2
8.69
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