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ASME B18.22.1 Type A Plain Washers

ASME B18.22 1 Type A Plain Washers

ASME B18.22.1 Type A Plain Washers Dimensions (mm)

Nominal Size Series Inside Diameter, A Outside Diameter, B Thickness, C
Basic Max. Min. Basic Max. Min. Basic Max. Min.
#0 ... ... 1.981 4.775 4.648 4.775 1.143 0.101 0.508 0.635 0.406
#2 ... ... 2.387 6.35 6.223 6.35 1.143 0.101 0.508 0.635 0.406
#4 ... ... 3.175 8.128 7.797 7.924 1.828 0.177 0.812 1.016 0.635
#6 0.138 ... 3.962 9.906 9.398 9.525 2.895 0.33 1.244 1.651 0.914
#8 0.164 ... 4.775 11.506 10.998 11.125 2.895 0.33 1.244 1.651 0.914
#10 0.19 ... 5.562 13.081 12.573 12.7 2.895 0.33 1.244 1.651 0.914
3/16 0.188 ... 6.35 14.655 14.147 14.274 2.895 0.33 1.244 1.651 0.914
#12 0.216 ... 6.35 14.655 14.147 14.274 3.683 0.355 1.651 2.032 1.295
1/4 0.25 Narrow 7.137 16.256 15.748 15.875 3.683 0.355 1.651 2.032 1.295
1/4 0.25 Wide 7.924 19.024 18.465 18.643 3.683 0.355 1.651 2.032 1.295
5/16 0.312 Narrow 8.737 17.856 17.297 17.475 3.683 0.355 1.651 2.032 1.295
5/16 0.312 Wide 9.525 22.987 22.047 22.225 4.749 0.482 2.108 2.641 1.625
3/8 0.375 Narrow 10.312 21.005 20.447 20.624 3.683 0.355 1.651 2.032 1.295
3/8 0.375 Wide 11.125 26.162 25.222 25.4 4.749 0.482 2.108 2.641 1.625
7/16 0.438 Narrow 11.912 23.799 23.241 23.418 3.683 0.355 1.651 2.032 1.295
7/16 0.438 Wide 12.7 32.512 31.572 31.75 4.749 0.482 2.108 2.641 1.625
1/2 0.5 Narrow 13.487 27.736 26.797 26.974 5.486 0.533 2.413 3.073 1.879
1/2 0.5 Wide 14.274 35.687 34.747 34.925 6.121 0.584 2.768 3.352 2.184
9/16 0.562 Narrow 15.087 30.124 29.184 29.362 5.486 0.533 2.413 3.073 1.879
9/16 0.562 Wide 15.875 38.074 37.134 37.312 6.121 0.584 2.768 3.352 2.184
5/8 0.625 Narrow 16.662 34.086 33.147 33.324 5.486 0.533 2.413 3.073 1.879
5/8 0.625 Wide 17.475 45.212 44.272 44.45 7.467 0.66 3.403 4.064 2.743
3/4 0.75 Narrow 20.624 38.074 37.134 37.312 7.467 0.66 3.403 4.064 2.743
3/4 0.75 Wide 20.624 51.562 50.622 50.8 8.255 0.66 3.759 4.495 3.098
7/8 0.875 Narrow 23.825 45.212 44.272 44.45 7.467 0.66 3.403 4.064 2.743
7/8 0.875 Wide 23.825 57.912 56.972 57.15 9.067 0.736 4.191 4.876 3.454
1 1 Narrow 26.974 51.562 50.622 50.8 7.467 0.66 3.403 4.064 2.743
1 1 Wide 26.974 64.262 63.322 63.5 9.067 0.736 4.191 4.876 3.454
1 1/8 1.125 Narrow 31.75 57.912 56.972 57.15 7.467 0.66 3.403 4.064 2.743
1 1/8 1.125 Wide 31.75 70.612 69.672 69.85 9.067 0.736 4.191 4.876 3.454
1 1/4 1.25 Narrow 34.925 64.262 63.322 63.5 9.067 0.736 4.191 4.876 3.454
1 1/4 1.25 Wide 34.925 76.962 76.022 76.2 9.067 0.736 4.191 4.876 3.454
1 3/8 1.375 Narrow 38.1 70.612 69.672 69.85 9.067 0.736 4.191 4.876 3.454
1 3/8 1.375 Wide 38.1 83.693 82.296 82.55 9.982 0.685 4.572 5.41 3.886
1 1/2 1.5 Narrow 41.275 76.962 76.022 76.2 9.067 0.736 4.191 4.876 3.454
1 1/2 1.5 Wide 41.275 90.043 88.646 88.9 9.982 0.685 4.572 5.41 3.886
1 5/8 1.625 ... 44.45 96.393 94.996 95.25 9.982 0.685 4.572 5.41 3.886
1 3/4 1.75 ... 47.625 102.743 101.346 101.6 9.982 0.685 4.572 5.41 3.886
1 7/8 1.875 ... 50.8 109.093 107.696 107.95 9.982 0.685 4.572 5.41 3.886
2 2 ... 53.975 115.443 114.046 114.3 9.982 0.685 4.572 5.41 3.886
2 1/4 2.25 ... 60.325 121.793 120.396 120.65 11.887 0.685 5.588 6.299 4.902
2 1/2 2.5 ... 66.675 128.143 126.746 127 13.157 0.711 6.045 7.112 5.334
2 3/4 2.75 ... 73.025 135.001 133.096 133.35 14.452 0.787 6.578 7.874 5.791
3 3 ... 79.375 141.351 139.446 139.7 15.519 0.889 7.213 8.305 6.324

ASME B18.22.1 Type A Plain Washers Dimensions (Inch)

Nominal Size Series Inside Diameter, A Outside Diameter, B Thickness, C
Basic Max. Min. Basic Max. Min. Basic Max. Min.
#0 ... ... 0.078 0.188 0.183 0.188 0.045 0.004 0.020 0.025 0.016
#2 ... ... 0.094 0.250 0.245 0.250 0.045 0.004 0.020 0.025 0.016
#4 ... ... 0.125 0.320 0.307 0.312 0.072 0.007 0.032 0.040 0.025
#6 0.138 ... 0.156 0.390 0.370 0.375 0.114 0.013 0.049 0.065 0.036
#8 0.164 ... 0.188 0.453 0.433 0.438 0.114 0.013 0.049 0.065 0.036
#10 0.19 ... 0.219 0.515 0.495 0.500 0.114 0.013 0.049 0.065 0.036
3/16 0.188 ... 0.250 0.577 0.557 0.562 0.114 0.013 0.049 0.065 0.036
#12 0.216 ... 0.250 0.577 0.557 0.562 0.145 0.014 0.065 0.080 0.051
1/4 0.25 Narrow 0.281 0.640 0.620 0.625 0.145 0.014 0.065 0.080 0.051
1/4 0.25 Wide 0.312 0.749 0.727 0.734 0.145 0.014 0.065 0.080 0.051
5/16 0.312 Narrow 0.344 0.703 0.681 0.688 0.145 0.014 0.065 0.080 0.051
5/16 0.312 Wide 0.375 0.905 0.868 0.875 0.187 0.019 0.083 0.104 0.064
3/8 0.375 Narrow 0.406 0.827 0.805 0.812 0.145 0.014 0.065 0.080 0.051
3/8 0.375 Wide 0.438 1.030 0.993 1.000 0.187 0.019 0.083 0.104 0.064
7/16 0.438 Narrow 0.469 0.937 0.915 0.922 0.145 0.014 0.065 0.080 0.051
7/16 0.438 Wide 0.500 1.280 1.243 1.250 0.187 0.019 0.083 0.104 0.064
1/2 0.5 Narrow 0.531 1.092 1.055 1.062 0.216 0.021 0.095 0.121 0.074
1/2 0.5 Wide 0.562 1.405 1.368 1.375 0.241 0.023 0.109 0.132 0.086
9/16 0.562 Narrow 0.594 1.186 1.149 1.156 0.216 0.021 0.095 0.121 0.074
9/16 0.562 Wide 0.625 1.499 1.462 1.469 0.241 0.023 0.109 0.132 0.086
5/8 0.625 Narrow 0.656 1.342 1.305 1.312 0.216 0.021 0.095 0.121 0.074
5/8 0.625 Wide 0.688 1.780 1.743 1.750 0.294 0.026 0.134 0.160 0.108
3/4 0.75 Narrow 0.812 1.499 1.462 1.469 0.294 0.026 0.134 0.160 0.108
3/4 0.75 Wide 0.812 2.030 1.993 2.000 0.325 0.026 0.148 0.177 0.122
7/8 0.875 Narrow 0.938 1.780 1.743 1.750 0.294 0.026 0.134 0.160 0.108
7/8 0.875 Wide 0.938 2.280 2.243 2.250 0.357 0.029 0.165 0.192 0.136
1 1 Narrow 1.062 2.030 1.993 2.000 0.294 0.026 0.134 0.160 0.108
1 1 Wide 1.062 2.530 2.493 2.500 0.357 0.029 0.165 0.192 0.136
1 1/8 1.125 Narrow 1.250 2.280 2.243 2.250 0.294 0.026 0.134 0.160 0.108
1 1/8 1.125 Wide 1.250 2.780 2.743 2.750 0.357 0.029 0.165 0.192 0.136
1 1/4 1.25 Narrow 1.375 2.530 2.493 2.500 0.357 0.029 0.165 0.192 0.136
1 1/4 1.25 Wide 1.375 3.030 2.993 3.000 0.357 0.029 0.165 0.192 0.136
1 3/8 1.375 Narrow 1.500 2.780 2.743 2.750 0.357 0.029 0.165 0.192 0.136
1 3/8 1.375 Wide 1.500 3.295 3.240 3.250 0.393 0.027 0.180 0.213 0.153
1 1/2 1.5 Narrow 1.625 3.030 2.993 3.000 0.357 0.029 0.165 0.192 0.136
1 1/2 1.5 Wide 1.625 3.545 3.490 3.500 0.393 0.027 0.180 0.213 0.153
1 5/8 1.625 ... 1.750 3.795 3.740 3.750 0.393 0.027 0.180 0.213 0.153
1 3/4 1.75 ... 1.875 4.045 3.990 4.000 0.393 0.027 0.180 0.213 0.153
1 7/8 1.875 ... 2.000 4.295 4.240 4.250 0.393 0.027 0.180 0.213 0.153
2 2 ... 2.125 4.545 4.490 4.500 0.393 0.027 0.180 0.213 0.153
2 1/4 2.25 ... 2.375 4.795 4.740 4.750 0.468 0.027 0.220 0.248 0.193
2 1/2 2.5 ... 2.625 5.045 4.990 5.000 0.518 0.028 0.238 0.280 0.210
2 3/4 2.75 ... 2.875 5.315 5.240 5.250 0.569 0.031 0.259 0.310 0.228
3 3 ... 3.125 5.565 5.490 5.500 0.611 0.035 0.284 0.327 0.249