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ASME/ANSI B18.21.1-4-2005
High-collar helical spring lock washers-Table4
Nom
d max
d min
h min
b min
#4
0.12
0.114
0.022
0.022
#5
0.133
0.127
0.03
0.03
#6
0.148
0.141
0.03
0.03
#8
0.174
0.167
0.047
0.042
#10
0.2
0.193
0.047
0.042
1/4
0.26
0.252
0.078
0.047
5/16
0.322
0.314
0.093
0.062
3/8
0.385
0.377
0.125
0.076
7/16
0.45
0.44
0.14
0.09
1/2
0.512
0.502
0.172
0.103
5/8
0.641
0.628
0.203
0.125
3/4
0.766
0.753
0.218
0.154
7/8
0.894
0.878
0.234
0.182
1
1.024
1.003
0.25
0.208
1-1/8
1.153
1.129
0.313
0.236
1-1/4
1.28
1.254
0.313
0.236
1-3/8
1.408
1.379
0.375
0.292
1-1/2
1.534
1.504
0.375
0.292
1-3/4
1.789
1.758
0.469
0.383
2
2.039
2.008
0.469
0.383
2-1/4
2.293
2.262
0.508
0.508
2-1/2
2.543
2.512
0.508
0.508
2-3/4
2.793
2.762
0.633
0.633
3
3.043
3.012
0.633
0.633
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