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ASME/ANSI B18.21.1-9-1983
Type A toothed lock washers with countersunk-Table 9
Nom
d max
d min
dc
h max
h min
#4
0.123
0.113
0.213
0.019
0.015
#6
0.15
0.14
0.289
0.021
0.017
#8
0.177
0.167
0.322
0.021
0.017
#10
0.205
0.195
0.354
0.025
0.02
#12
0.231
0.22
0.421
0.025
0.02
1/4
0.267
0.255
0.454
0.025
0.02
#16
0.287
0.273
0.505
0.028
0.023
5/16
0.333
0.318
0.599
0.028
0.023
3/8
0.398
0.383
0.765
0.034
0.028
7/16
0.463
0.448
0.867
0.045
0.037
1/2
0.529
0.512
0.976
0.045
0.037
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