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ASME/ANSI B18.21.1-7-2005
Type A heavy internal tooth lock washets-Table7
Nom
d max
d min
dc max
dc min
h max
h min
1/4
0.267
0.256
0.536
0.5
0.045
0.035
5/16
0.332
0.32
0.607
0.59
0.05
0.04
3/8
0.398
0.384
0.748
0.7
0.05
0.042
7/16
0.464
0.448
0.858
0.8
0.067
0.05
1/2
0.53
0.512
0.924
0.88
0.067
0.055
9/16
0.596
0.576
1.034
0.99
0.067
0.055
5/8
0.663
0.64
1.135
1.1
0.067
0.059
3/4
0.795
0.769
1.265
1.24
0.084
0.07
7/8
0.927
0.894
1.447
1.4
0.084
0.075
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