ASME B18.21.1 Extra Duty Helical Spring Lock Washers
ASME B18.21.1 Extra Duty Helical Spring Lock Washers Dimensions (mm)
| Nominal Size | Inside Diameter, A | Maximum Outside Diameter, B | Minimum Mean Section Thickness (ti + to)/2, T | Minimum Section Width, W | Minimum Bearing Width, BW | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. | Min. | |||||||||||
| ASME B18.21.1 #2 (0.086) | 2.388 | 2.235 | 5.283 | 0.686 | 1.346 | 0.94 | ||||||
| ASME B18.21.1 #3 (0.099) | 2.718 | 2.565 | 6.071 | 0.864 | 1.575 | 1.092 | ||||||
| ASME B18.21.1 #4 (0.112) | 3.048 | 2.896 | 6.426 | 0.864 | 1.575 | 1.092 | ||||||
| ASME B18.21.1 #5 (0.125) | 3.378 | 3.226 | 7.62 | 1.143 | 2.007 | 1.397 | ||||||
| ASME B18.21.1 #6 (0.138) | 3.759 | 3.581 | 7.976 | 1.143 | 2.007 | 1.397 | ||||||
| ASME B18.21.1 #8 (0.164) | 4.42 | 4.242 | 9.525 | 1.448 | 2.438 | 1.702 | ||||||
| ASME B18.21.1 #10 (0.190) | 5.08 | 4.902 | 11.024 | 1.727 | 2.845 | 1.981 | ||||||
| ASME B18.21.1 #12 (0.216) | 5.766 | 5.588 | 12.624 | 2.032 | 3.302 | 2.311 | ||||||
| ASME B18.21.1 1⁄4 (0.250) | 6.604 | 6.401 | 13.538 | 2.134 | 3.353 | 2.337 | ||||||
| ASME B18.21.1 5⁄16 (0.3125) | 8.179 | 7.976 | 15.723 | 2.743 | 3.632 | 2.54 | ||||||
| ASME B18.21.1 3⁄8 (0.375) | 9.779 | 9.576 | 18.745 | 3.124 | 4.318 | 3.023 | ||||||
| ASME B18.21.1 7⁄16 (0.4375) | 11.43 | 11.176 | 21.234 | 3.632 | 4.724 | 3.302 | ||||||
| ASME B18.21.1 1⁄2 (0.500) | 13.005 | 12.751 | 23.749 | 4.115 | 5.182 | 3.632 | ||||||
| ASME B18.21.1 9⁄16 (0.5625) | 14.58 | 14.326 | 26.289 | 4.623 | 5.664 | 3.962 | ||||||
| ASME B18.21.1 5⁄8 (0.625) | 16.281 | 15.951 | 29.235 | 5.131 | 6.147 | 4.293 | ||||||
| ASME B18.21.1 11⁄16 (0.6875) | 17.882 | 17.551 | 31.801 | 5.613 | 6.604 | 4.623 | ||||||
| ASME B18.21.1 3⁄4 (0.750) | 19.456 | 19.126 | 34.417 | 6.121 | 7.087 | 4.953 | ||||||
| ASME B18.21.1 13⁄16 (0.8125) | 21.133 | 20.726 | 37.033 | 6.629 | 7.569 | 5.309 | ||||||
| ASME B18.21.1 7⁄8 (0.875) | 22.708 | 22.301 | 39.903 | 7.239 | 8.179 | 5.715 | ||||||
| ASME B18.21.1 15⁄16 (0.9375) | 24.333 | 23.901 | 42.774 | 7.823 | 8.763 | 6.121 | ||||||
| ASME B18.21.1 1 (1.000) | 26.01 | 25.476 | 45.568 | 8.382 | 9.296 | 6.502 | ||||||
| ASME B18.21.1 11⁄16 (1.0625) | 27.61 | 27.076 | 48.387 | 8.941 | 9.881 | 6.909 | ||||||
| ASME B18.21.1 11⁄8 (1.125) | 29.286 | 28.677 | 51.13 | 9.525 | 10.439 | 7.315 | ||||||
| ASME B18.21.1 13⁄16 (1.1875) | 30.912 | 30.277 | 53.518 | 10.058 | 10.947 | 7.671 | ||||||
| ASME B18.21.1 11⁄4 (1.250) | 32.512 | 31.852 | 56.439 | 10.592 | 11.481 | 8.026 | ||||||
| ASME B18.21.1 15⁄16 (1.3125) | 34.138 | 33.452 | 59.106 | 11.125 | 11.989 | 8.382 | ||||||
| ASME B18.21.1 13⁄8 (1.375) | 35.763 | 35.027 | 61.697 | 11.633 | 12.471 | 8.738 | ||||||
| ASME B18.21.1 17⁄16 (1.4375) | 37.389 | 36.627 | 64.262 | 12.141 | 12.929 | 9.042 | ||||||
| ASME B18.21.1 11⁄2 (1.500) | 38.964 | 38.202 | 66.726 | 12.598 | 13.36 | 9.347 | ||||||
| ASME B18.21.1 15⁄8 (1.625) | 42.24 | 41.478 | 70.714 | 12.598 | 13.36 | 9.347 | ||||||
| ASME B18.21.1 13⁄4 (1.750) | 45.441 | 44.653 | 73.711 | 13.36 | 13.513 | 9.449 | ||||||
| ASME B18.21.1 17⁄8 (1.875) | 48.616 | 47.828 | 76.886 | 13.36 | 13.513 | 9.449 | ||||||
| ASME B18.21.1 2 (2.000) | 51.791 | 51.003 | 80.162 | 13.36 | 13.513 | 9.449 | ||||||
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ASME B18.21.1 Extra Duty Helical Spring Lock Washers Dimensions (Inch)
| Nominal Size | Inside Diameter, A | Maximum Outside Diameter, B | Minimum Mean Section Thickness (ti + to)/2, T | Minimum Section Width, W | Minimum Bearing Width, BW | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max. | Min. | |||||||||||
| ASME B18.21.1 #2 (0.086) | 2.388 | 2.235 | 5.283 | 0.686 | 1.346 | 0.94 | ||||||
| ASME B18.21.1 #3 (0.099) | 2.718 | 2.565 | 6.071 | 0.864 | 1.575 | 1.092 | ||||||
| ASME B18.21.1 #4 (0.112) | 3.048 | 2.896 | 6.426 | 0.864 | 1.575 | 1.092 | ||||||
| ASME B18.21.1 #5 (0.125) | 3.378 | 3.226 | 7.62 | 1.143 | 2.007 | 1.397 | ||||||
| ASME B18.21.1 #6 (0.138) | 3.759 | 3.581 | 7.976 | 1.143 | 2.007 | 1.397 | ||||||
| ASME B18.21.1 #8 (0.164) | 4.42 | 4.242 | 9.525 | 1.448 | 2.438 | 1.702 | ||||||
| ASME B18.21.1 #10 (0.190) | 5.08 | 4.902 | 11.024 | 1.727 | 2.845 | 1.981 | ||||||
| ASME B18.21.1 #12 (0.216) | 5.766 | 5.588 | 12.624 | 2.032 | 3.302 | 2.311 | ||||||
| ASME B18.21.1 1⁄4 (0.250) | 6.604 | 6.401 | 13.538 | 2.134 | 3.353 | 2.337 | ||||||
| ASME B18.21.1 5⁄16 (0.3125) | 8.179 | 7.976 | 15.723 | 2.743 | 3.632 | 2.54 | ||||||
| ASME B18.21.1 3⁄8 (0.375) | 9.779 | 9.576 | 18.745 | 3.124 | 4.318 | 3.023 | ||||||
| ASME B18.21.1 7⁄16 (0.4375) | 11.43 | 11.176 | 21.234 | 3.632 | 4.724 | 3.302 | ||||||
| ASME B18.21.1 1⁄2 (0.500) | 13.005 | 12.751 | 23.749 | 4.115 | 5.182 | 3.632 | ||||||
| ASME B18.21.1 9⁄16 (0.5625) | 14.58 | 14.326 | 26.289 | 4.623 | 5.664 | 3.962 | ||||||
| ASME B18.21.1 5⁄8 (0.625) | 16.281 | 15.951 | 29.235 | 5.131 | 6.147 | 4.293 | ||||||
| ASME B18.21.1 11⁄16 (0.6875) | 17.882 | 17.551 | 31.801 | 5.613 | 6.604 | 4.623 | ||||||
| ASME B18.21.1 3⁄4 (0.750) | 19.456 | 19.126 | 34.417 | 6.121 | 7.087 | 4.953 | ||||||
| ASME B18.21.1 13⁄16 (0.8125) | 21.133 | 20.726 | 37.033 | 6.629 | 7.569 | 5.309 | ||||||
| ASME B18.21.1 7⁄8 (0.875) | 22.708 | 22.301 | 39.903 | 7.239 | 8.179 | 5.715 | ||||||
| ASME B18.21.1 15⁄16 (0.9375) | 24.333 | 23.901 | 42.774 | 7.823 | 8.763 | 6.121 | ||||||
| ASME B18.21.1 1 (1.000) | 26.01 | 25.476 | 45.568 | 8.382 | 9.296 | 6.502 | ||||||
| ASME B18.21.1 11⁄16 (1.0625) | 27.61 | 27.076 | 48.387 | 8.941 | 9.881 | 6.909 | ||||||
| ASME B18.21.1 11⁄8 (1.125) | 29.286 | 28.677 | 51.13 | 9.525 | 10.439 | 7.315 | ||||||
| ASME B18.21.1 13⁄16 (1.1875) | 30.912 | 30.277 | 53.518 | 10.058 | 10.947 | 7.671 | ||||||
| ASME B18.21.1 11⁄4 (1.250) | 32.512 | 31.852 | 56.439 | 10.592 | 11.481 | 8.026 | ||||||
| ASME B18.21.1 15⁄16 (1.3125) | 34.138 | 33.452 | 59.106 | 11.125 | 11.989 | 8.382 | ||||||
| ASME B18.21.1 13⁄8 (1.375) | 35.763 | 35.027 | 61.697 | 11.633 | 12.471 | 8.738 | ||||||
| ASME B18.21.1 17⁄16 (1.4375) | 37.389 | 36.627 | 64.262 | 12.141 | 12.929 | 9.042 | ||||||
| ASME B18.21.1 11⁄2 (1.500) | 38.964 | 38.202 | 66.726 | 12.598 | 13.36 | 9.347 | ||||||
| ASME B18.21.1 15⁄8 (1.625) | 42.24 | 41.478 | 70.714 | 12.598 | 13.36 | 9.347 | ||||||
| ASME B18.21.1 13⁄4 (1.750) | 45.441 | 44.653 | 73.711 | 13.36 | 13.513 | 9.449 | ||||||
| ASME B18.21.1 17⁄8 (1.875) | 48.616 | 47.828 | 76.886 | 13.36 | 13.513 | 9.449 | ||||||
| ASME B18.21.1 2 (2.000) | 51.791 | 51.003 | 80.162 | 13.36 | 13.513 | 9.449 | ||||||
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