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CNS 4409-1981
Cross recessed raised cheese head screws with type H cross recess,ex-teeth serrated lock washers a and large plain washer assemblies
Nom
P
dk
h
k
No.
M
t min
t max
f
h1
dc
d1
d2 max
d2 min
dc1 max
dc1 min
H min
h2 max
h2 min
Number of teeth min
M2.5
0.45
5
2
1.3
1
2.7
1.3
1.6
0.7
0.8
8
2.21
2.35
2.25
5.5
5.32
1.2
0.44
0.36
9
M3
0.5
6
2.4
1.6
1
3.1
1.7
2
0.8
0.8
9
2.68
2.8
2.7
6
5.82
1.2
0.44
0.36
9
M3.5
0.6
7
2.7
1.9
2
4.2
1.74
2.24
0.8
0.8
11
3.11
3.32
3.2
7
6.78
1.5
0.54
0.46
10
M4
0.7
8
3.1
2
2
4.6
2.04
2.54
1.1
1
12
3.55
3.72
3.6
8
7.78
1.5
0.54
0.46
11
M5
0.8
10
3.8
2.5
2
5.3
2.77
3.27
1.3
1.6
15
4.48
4.67
4.55
9
8.78
1.8
0.65
0.55
11
M6
1
12
4.6
3
3
6.8
3.03
3.53
1.6
1.6
18
5.35
6.65
6.5
12.5
12.23
2.4
0.85
0.75
14
M8
1.25
16
6
3.7
4
9
4.18
4.68
2.3
2
25
7.19
7.55
7.4
14
13.73
2.4
0.85
0.75
14
M10
1.5
20
7.5
4.8
4
10.2
5.38
5.88
2.7
2.5
30
9.03
9.45
9.3
18
17.73
2.7
0.95
0.85
16
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