Engineers Edge

Split Lock Helical Spring Washer Size Dimension Table Chart ANSI/ASME B18.21.1

ANSI and Metric Hardware Resources Tables and References

American National Standard Helical Spring Lock Washers ANSI/ASME B18.21.1

Helical Split spring lock washers are available in four series: Regular, heavy, extra duty and hi-collar as given below. Helical spring lock washers made of materials other than carbon steel are available in the regular series.

Note: Section Thickness (T) = (ti + to)/2

Nominal
Washer
Size

Inside
Diameter, A

Regular
Heavy
Extra Heavy Duty
Max.
Min.
O.D.
B
Max.
Section
Width
W
Section Thickness, T
O.D.
,B Max.
Section
Width
W
O.D.
B
Max.
Section
Width
W
No. 2
0.086
0.094
0.088
0.172
0.035
0.020
0.182
0.040
0.025
0.208
0.053
0.027
No. 3
0.099
0.107
0.101
0.195
0.040
0.025
0.209
0.047
0.031
0.239
0.062
0.034
No. 4
0.112
0.120
0.114
0.209
0.040
0.025
0.223
0.047
0.031
0.253
0.062
0.034
No. 5
0.125
0.133
0.127
0.236
0.047
0.031
0.252
0.055
0.040
0.300
0.079
0.045
No. 6
0.138
0.148
0.141
0.250
0.047
0.031
0.266
0.055
0.040
0.314
0.079
0.045
No. 8
0.164
0.174
0.167
0.293
0.055
0.040
0.307
0.062
0.047
0.375
0.096
0.057
No. 10
0.190
0.200
0.193
0.334
0.062
0.047
0.350
0.070
0.056
0.434
0.112
0.068
No. 12
0.216
0.227
0.220
0.377
0.070
0.056
0.391
0.077
0.063
0.497
0.130
0.080
1⁄4
0.250
0.260
0.252
0.487
0.109
0.062
0.489
0.110
0.077
0.533
0.132
0.084
5/⁄16
0.3125
0.322
0.314
0.583
0.125
0.078
0.293
0.130
0.097
0.619
0.143
0.108
3/⁄8
0.375
0.385
0.377
0.680
0.141
0.094
0.688
0.145
0.115
0.738
0.170
0.123
7/⁄16
0.4375
0.450
0.440
0.776
0.156
0.109
0.784
0.160
0.133
0.836
0.186
0.143
1/⁄2
0.500
0.512
0.502
0.869
0.171
0.125
0.879
0.176
0.151
0.935
0.204
0.162
9⁄/16
0.5625
0.574
0.564
0.965
0.188
0.141
0.975
0.193
0.170
1.035
0.223
0.182
5⁄/8
0.625
0.641
0.628
1.073
0.203
0.156
1.087
0.210
0.189
1.151
0.242
0.202
1 1/⁄16
0.6875
0.704
0.691
1.170
0.219
0.172
1.186
0.227
0.207
1.252
0.260
0.221
3/⁄4
0.750
0.766
0.753
1.265
0.234
0.188
1.285
0.244
0.226
1.355
0.279
0.241
1 3/⁄16
0.8125
0.832
0.816
1.363
0.250
0.203
1.387
0.262
0.246
1.458
0.298
0.261
7⁄/8
0.875
0.894
0.878
1.459
0.266
0.219
1.489
0.281
0.266
1.571
0.322
0.285
1 5/⁄16
0.9375
0.958
0.941
1.556
0.281
0.234
1.590
0.298
0.284
1.684
0.345
0.308
1
1.000
1.024
1.003
1.656
0.297
0.250
1.700
0.319
0.306
1.794
0.366
0.330
1 1/⁄16
1.0625
1.087
1.066
1.751
0.312
0.266
1.803
0.338
0.326
1.905
0.389
0.352
1 1/⁄8
1.125
1.153
1.129
1.847
0.328
0.281
1.903
0.356
0.345
2.013
0.411
0.375
1 3/⁄16
1.1875
1.217
1.192
1.943
0.344
0.297
2.001
0.373
0.364
2.107
0.431
0.396
1 1/⁄4
1.250
1.280
1.254
2.036
0.359
0.312
2.104
0.393
0.384
2.222
0.452
0.417
1 5/⁄16
1.3125
1.344
1.317
2.133
0.375
0.328
2.203
0.410
0.403
2.327
0.472
0.438
1 3/⁄8
1.375
1.408
1.379
2.219
0.391
0.344
2.301
0.427
0.422
2.429
0.491
0.458
1 7/⁄16
1.4375
1.472
1.442
2.324
0.406
0.359
2.396
0.442
0.440
2.530
0.509
0.478
1 1/⁄2
1.500
1.534
1.504
2.419
0.422
0.375
2.491
0.458
0.458
2.627
0.526
0.496

Contribute Article Spider Trap

© Copyright 2000 - 2015, by Engineers Edge, LLC www.engineersedge.com
All rights reserved
Disclaimer | Feed Back | Advertising | Contact

Home
Engineering Book Store
Engineering Forum
Engineering News
Engineering Videos
Engineering Calculators
Engineering Toolbox Directory
Engineering Jobs
GD&T Training Geometric Dimensioning Tolerancing
DFM DFA Training
Training Online Engineering PDH
Advertising Center



Copyright Notice

Publishing Program