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JIS B1256-5.1-1998
Plain washers—large series-Table 5-1
Nom
d min
d max
dc max
dc min
h max
h min
Φ3
3.2
3.38
9
8.64
0.9
0.7
Φ3.5
3.7
3.88
11
10.57
0.9
0.7
Φ4
4.3
4.48
12
11.57
1.1
0.9
Φ5
5.3
5.48
15
14.57
1.4
1
Φ6
6.4
6.62
18
17.57
1.8
1.4
Φ8
8.4
8.62
24
23.48
2.2
1.8
Φ10
10.5
10.77
30
29.48
2.7
2.3
Φ12
13
13.27
37
36.38
3.3
2.7
Φ14
15
15.27
44
43.38
3.3
2.7
Φ16
17
17.27
50
49.38
3.3
2.7
Φ20
21
21.33
60
59.26
4.3
3.7
Φ24
25
25.52
72
71.26
5.6
4.4
Φ30
31
31.62
92
91.13
6.6
5.4
Φ36
37
37.62
110
109.13
9
7
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