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JIS B1255-2-1977
Toothed lock washers with countersunk-Table 2
Nom
d max
d min
dc
h max
h min
Number of teeth min
Φ3
3.4
3.2
6
0.43
0.37
8
Φ3.5
3.9
3.7
7
0.43
0.37
8
Φ4
4.5
4.3
8
0.43
0.37
8
Φ4.5
5
4.8
9
0.535
0.465
9
Φ5
5.5
5.3
10
0.535
0.465
9
Φ6
6.7
6.4
12
0.535
0.465
10
Φ8
8.7
8.4
16
0.64
0.56
12
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