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GB/T 840-1988
Plastle dlamond knurl haed screws-type B
Nom
P
dk
k
dp max
dp min
z max
z min
M4
0.7
12
5
2.5
2.25
2.25
2
M5
0.8
16
6
3.5
3.2
2.75
2.5
M6
1
20
6
4
3.7
3.25
3
M8
1.25
25
8
5.5
5.2
4.3
4
M10
1.5
28
8
7
6.64
5.3
5
M12
1.75
32
10
8.5
8.14
6.3
6
M16
2
40
12
12
11.57
8.36
8
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