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ASME/ANSI B18.21.2M-7-2014
Metric type A toothed lock washers with countersunk-Table 7
Nom
d max
d min
dc
h max
h min
Φ2
2.4
2.25
3.75
0.25
0.17
Φ2.2
2.4
2.25
3.75
0.25
0.17
Φ2.5
2.8
2.65
4.5
0.25
0.17
Φ2.9
3.3
3.15
5.85
0.45
0.3
Φ3
3.3
3.15
5.85
0.45
0.3
Φ3.5
3.8
3.65
6.6
0.45
0.3
Φ4
4.47
4.27
7.5
0.55
0.4
Φ4.2
4.47
4.27
7.5
0.55
0.4
Φ4.8
5.3
5.15
9.6
0.65
0.5
Φ5
5.3
5.15
9.6
0.65
0.5
Φ5.5
5.87
5.61
10.9
0.65
0.5
Φ6
6.5
6.2
12
0.65
0.5
Φ6.3
6.8
6.5
12
0.65
0.5
Φ8
8.5
8.2
15.6
0.7
0.55
Φ9.5
10.6
10.2
19.5
0.85
0.7
Φ10
10.6
10.2
19.5
0.85
0.7
Φ12
12.7
12.3
23
1
0.8
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