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ASME/ANSI B18.13.1M-5-1998
Metric cross recessed pan head screws and type H regular conical spring washers assemblies-Table 5
Nom
P
dk max
dk min
k max
k min
M
No.
t
dc max
dc min
H max
H min
h max
h min
M3.5
0.6
7
6.6
2.6
2.3
3.9
2
2.14
10
9.64
1.1
0.95
0.63
0.38
M4
0.7
8
7.6
3.1
2.8
4.36
2
2.54
12
11.57
1.2
1
0.65
0.4
M5
0.8
9.5
9.1
3.7
3.4
4.76
2
2.94
15
14.57
1.55
1.3
0.65
0.4
M6
1
12
11.5
4.6
4.3
6.8
3
3.84
18.8
18.28
2.25
1.9
0.79
0.54
M8
1.25
16
15.5
6
5.6
8.82
4
4.96
25.4
24.88
2.75
2.4
0.75
0.48
M10
1.5
20
19.4
7.5
7.1
10.04
4
6.16
28
27.48
3.15
2.8
0.83
0.58
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