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JIS B1251-2-2018
Heavy duty spring lock washers-Table 2
Nom
d max
d min
b min
h min
H min
dc max
Φ6
6.5
6.1
2.7
1.9
3.8
12.2
Φ7
7.5
7.1
2.8
2
4
13.4
Φ8
8.7
8.2
3.3
2.5
5
15.6
Φ10
10.7
10.2
3.9
3
6
18.8
Φ12
12.8
12.2
4.4
3.6
7.2
21.9
Φ14
14.8
14.2
4.8
4.2
8.4
24.7
Φ16
17
16.2
5.3
4.8
9.6
28.2
Φ18
19
18.2
5.9
5.4
10.8
31.4
Φ20
21
20.2
6.4
6
12
34.4
Φ22
23.5
22.5
7.1
6.8
13.6
38.3
Φ24
25.5
24.5
7.6
7.2
14.4
41.3
Φ27
28.7
27.5
8.6
8.3
16.6
46.7
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