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JIS B2804-20-2010
Lock washers (retaining washers for shafts)-Table 20
Nom
d max
d min
dc max
dc min
n max
n min
h max
h min
Φ0.8
0.8
0.72
2.1
1.9
0.7
0.45
0.22
0.18
Φ1.2
1.2
1.11
3.1
2.9
1
0.75
0.325
0.275
Φ1.5
1.5
1.41
4.2
3.8
1.3
1.05
0.43
0.37
Φ2
2
1.91
5.2
4.8
1.7
1.45
0.43
0.37
Φ2.5
2.5
2.41
6.2
5.8
2.1
1.85
0.43
0.37
Φ3
3
2.91
7.2
6.8
2.6
2.35
0.64
0.56
Φ4
4
3.88
9.2
8.8
3.5
3.2
0.64
0.56
Φ5
5
4.88
11.2
10.8
4.3
4
0.64
0.56
Φ6
6
5.88
12.2
11.8
5.2
4.9
0.84
0.76
Φ7
7
6.85
14.2
13.8
6.1
5.75
0.84
0.76
Φ8
8
7.85
16.2
15.8
6.9
6.55
0.84
0.76
Φ9
9
8.85
18.2
17.8
7.8
7.45
0.84
0.76
Φ10
10
9.85
20.3
19.7
8.7
8.35
1.05
0.95
Φ12
12
11.82
23.3
22.7
10.4
9.95
1.05
0.95
Φ15
15
14.82
29.3
28.7
13
12.55
1.66
1.54
Φ19
19
18.79
37.3
36.7
16.5
16.05
1.66
1.54
Φ24
24
23.79
44.3
43.7
20.8
20.3
2.07
1.93
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