ASME B18.21.1 Helical Spring Lock Washers
ASME B18.21.1 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 | 4.369 | 0.508 | 0.889 | 0.61 | ||||||
| ASME B18.21.1 #3 (0.099) | 2.718 | 2.565 | 4.953 | 0.635 | 1.016 | 0.711 | ||||||
| ASME B18.21.1 #4 (0.112) | 3.048 | 2.896 | 5.309 | 0.635 | 1.016 | 0.711 | ||||||
| ASME B18.21.1 #5 (0.125) | 3.378 | 3.226 | 5.994 | 0.787 | 1.194 | 0.838 | ||||||
| ASME B18.21.1 #6 (0.138) | 3.759 | 3.581 | 6.35 | 0.787 | 1.194 | 0.838 | ||||||
| ASME B18.21.1 #8 (0.164) | 4.42 | 4.242 | 7.442 | 1.016 | 1.397 | 0.965 | ||||||
| ASME B18.21.1 #10 (0.190) | 5.08 | 4.902 | 8.484 | 1.194 | 1.575 | 1.092 | ||||||
| ASME B18.21.1 #12 (0.216) | 5.766 | 5.588 | 9.576 | 1.422 | 1.778 | 1.245 | ||||||
| ASME B18.21.1 1⁄4 (0.250) | 6.604 | 6.401 | 12.37 | 1.575 | 2.769 | 1.93 | ||||||
| ASME B18.21.1 5⁄16 (0.3125) | 8.179 | 7.976 | 14.808 | 1.981 | 3.175 | 2.21 | ||||||
| ASME B18.21.1 3⁄8 (0.375) | 9.779 | 9.576 | 17.272 | 2.388 | 3.581 | 2.515 | ||||||
| ASME B18.21.1 7⁄16 (0.4375) | 11.43 | 11.176 | 19.71 | 2.769 | 3.962 | 2.769 | ||||||
| ASME B18.21.1 1⁄2 (0.500) | 13.005 | 12.751 | 22.073 | 3.175 | 4.343 | 3.048 | ||||||
| ASME B18.21.1 9⁄16 (0.5625) | 14.58 | 14.326 | 24.511 | 3.581 | 4.775 | 3.353 | ||||||
| ASME B18.21.1 5⁄8 (0.625) | 16.281 | 15.951 | 27.254 | 3.962 | 5.156 | 3.607 | ||||||
| ASME B18.21.1 11⁄16 (0.6875) | 17.882 | 17.551 | 29.718 | 4.369 | 5.563 | 3.886 | ||||||
| ASME B18.21.1 3⁄4 (0.750) | 19.456 | 19.126 | 32.131 | 4.775 | 5.944 | 4.166 | ||||||
| ASME B18.21.1 13⁄16 (0.8125) | 21.133 | 20.726 | 34.62 | 5.156 | 6.35 | 4.445 | ||||||
| ASME B18.21.1 7⁄8 (0.875) | 22.708 | 22.301 | 37.059 | 5.563 | 6.756 | 4.724 | ||||||
| ASME B18.21.1 15⁄16 (0.9375) | 24.333 | 23.901 | 39.522 | 5.944 | 7.137 | 5.004 | ||||||
| ASME B18.21.1 1 (1.000) | 26.01 | 25.476 | 42.062 | 6.35 | 7.544 | 5.283 | ||||||
| ASME B18.21.1 11⁄16 (1.0625) | 27.61 | 27.076 | 44.475 | 6.756 | 7.925 | 5.537 | ||||||
| ASME B18.21.1 11⁄8 (1.125) | 29.286 | 28.677 | 46.914 | 7.137 | 8.331 | 5.842 | ||||||
| ASME B18.21.1 13⁄16 (1.1875) | 30.912 | 30.277 | 49.352 | 7.544 | 8.738 | 6.121 | ||||||
| ASME B18.21.1 11⁄4 (1.250) | 32.512 | 31.852 | 51.714 | 7.925 | 9.119 | 6.375 | ||||||
| ASME B18.21.1 15⁄16 (1.3125) | 34.138 | 33.452 | 54.178 | 8.331 | 9.525 | 6.655 | ||||||
| ASME B18.21.1 13⁄8 (1.375) | 35.763 | 35.027 | 56.363 | 8.738 | 9.931 | 6.96 | ||||||
| ASME B18.21.1 17⁄16 (1.4375) | 37.389 | 36.627 | 59.03 | 9.119 | 10.312 | 7.214 | ||||||
| ASME B18.21.1 11⁄2 (1.500) | 38.964 | 38.202 | 61.443 | 9.525 | 10.719 | 7.493 | ||||||
| ASME B18.21.1 15⁄8 (1.625) | 42.24 | 41.478 | 64.846 | 9.881 | 10.77 | 7.544 | ||||||
| ASME B18.21.1 13⁄4 (1.750) | 45.441 | 44.653 | 68.047 | 9.881 | 10.77 | 7.544 | ||||||
| ASME B18.21.1 17⁄8 (1.875) | 48.616 | 47.828 | 71.399 | 10.719 | 10.846 | 7.595 | ||||||
| ASME B18.21.1 2 (2.000) | 51.791 | 51.003 | 74.574 | 10.719 | 10.846 | 7.595 | ||||||
| ASME B18.21.1 21⁄4 (2.250) | 58.242 | 57.455 | 81.813 | 11.176 | 11.227 | 7.849 | ||||||
| ASME B18.21.1 21⁄2 (2.500) | 64.592 | 63.805 | 88.163 | 11.176 | 11.227 | 7.849 | ||||||
| ASME B18.21.1 23⁄4 (2.750) | 70.942 | 70.155 | 97.13 | 11.633 | 12.471 | 8.738 | ||||||
| ASME B18.21.1 3 (3.000) | 77.292 | 76.505 | 103.48 | 11.633 | 12.471 | 8.738 | ||||||
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ASME B18.21.1 Helical Spring Lock Washers (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 | 4.369 | 0.508 | 0.889 | 0.61 | ||||||
| ASME B18.21.1 #3 (0.099) | 2.718 | 2.565 | 4.953 | 0.635 | 1.016 | 0.711 | ||||||
| ASME B18.21.1 #4 (0.112) | 3.048 | 2.896 | 5.309 | 0.635 | 1.016 | 0.711 | ||||||
| ASME B18.21.1 #5 (0.125) | 3.378 | 3.226 | 5.994 | 0.787 | 1.194 | 0.838 | ||||||
| ASME B18.21.1 #6 (0.138) | 3.759 | 3.581 | 6.35 | 0.787 | 1.194 | 0.838 | ||||||
| ASME B18.21.1 #8 (0.164) | 4.42 | 4.242 | 7.442 | 1.016 | 1.397 | 0.965 | ||||||
| ASME B18.21.1 #10 (0.190) | 5.08 | 4.902 | 8.484 | 1.194 | 1.575 | 1.092 | ||||||
| ASME B18.21.1 #12 (0.216) | 5.766 | 5.588 | 9.576 | 1.422 | 1.778 | 1.245 | ||||||
| ASME B18.21.1 1⁄4 (0.250) | 6.604 | 6.401 | 12.37 | 1.575 | 2.769 | 1.93 | ||||||
| ASME B18.21.1 5⁄16 (0.3125) | 8.179 | 7.976 | 14.808 | 1.981 | 3.175 | 2.21 | ||||||
| ASME B18.21.1 3⁄8 (0.375) | 9.779 | 9.576 | 17.272 | 2.388 | 3.581 | 2.515 | ||||||
| ASME B18.21.1 7⁄16 (0.4375) | 11.43 | 11.176 | 19.71 | 2.769 | 3.962 | 2.769 | ||||||
| ASME B18.21.1 1⁄2 (0.500) | 13.005 | 12.751 | 22.073 | 3.175 | 4.343 | 3.048 | ||||||
| ASME B18.21.1 9⁄16 (0.5625) | 14.58 | 14.326 | 24.511 | 3.581 | 4.775 | 3.353 | ||||||
| ASME B18.21.1 5⁄8 (0.625) | 16.281 | 15.951 | 27.254 | 3.962 | 5.156 | 3.607 | ||||||
| ASME B18.21.1 11⁄16 (0.6875) | 17.882 | 17.551 | 29.718 | 4.369 | 5.563 | 3.886 | ||||||
| ASME B18.21.1 3⁄4 (0.750) | 19.456 | 19.126 | 32.131 | 4.775 | 5.944 | 4.166 | ||||||
| ASME B18.21.1 13⁄16 (0.8125) | 21.133 | 20.726 | 34.62 | 5.156 | 6.35 | 4.445 | ||||||
| ASME B18.21.1 7⁄8 (0.875) | 22.708 | 22.301 | 37.059 | 5.563 | 6.756 | 4.724 | ||||||
| ASME B18.21.1 15⁄16 (0.9375) | 24.333 | 23.901 | 39.522 | 5.944 | 7.137 | 5.004 | ||||||
| ASME B18.21.1 1 (1.000) | 26.01 | 25.476 | 42.062 | 6.35 | 7.544 | 5.283 | ||||||
| ASME B18.21.1 11⁄16 (1.0625) | 27.61 | 27.076 | 44.475 | 6.756 | 7.925 | 5.537 | ||||||
| ASME B18.21.1 11⁄8 (1.125) | 29.286 | 28.677 | 46.914 | 7.137 | 8.331 | 5.842 | ||||||
| ASME B18.21.1 13⁄16 (1.1875) | 30.912 | 30.277 | 49.352 | 7.544 | 8.738 | 6.121 | ||||||
| ASME B18.21.1 11⁄4 (1.250) | 32.512 | 31.852 | 51.714 | 7.925 | 9.119 | 6.375 | ||||||
| ASME B18.21.1 15⁄16 (1.3125) | 34.138 | 33.452 | 54.178 | 8.331 | 9.525 | 6.655 | ||||||
| ASME B18.21.1 13⁄8 (1.375) | 35.763 | 35.027 | 56.363 | 8.738 | 9.931 | 6.96 | ||||||
| ASME B18.21.1 17⁄16 (1.4375) | 37.389 | 36.627 | 59.03 | 9.119 | 10.312 | 7.214 | ||||||
| ASME B18.21.1 11⁄2 (1.500) | 38.964 | 38.202 | 61.443 | 9.525 | 10.719 | 7.493 | ||||||
| ASME B18.21.1 15⁄8 (1.625) | 42.24 | 41.478 | 64.846 | 9.881 | 10.77 | 7.544 | ||||||
| ASME B18.21.1 13⁄4 (1.750) | 45.441 | 44.653 | 68.047 | 9.881 | 10.77 | 7.544 | ||||||
| ASME B18.21.1 17⁄8 (1.875) | 48.616 | 47.828 | 71.399 | 10.719 | 10.846 | 7.595 | ||||||
| ASME B18.21.1 2 (2.000) | 51.791 | 51.003 | 74.574 | 10.719 | 10.846 | 7.595 | ||||||
| ASME B18.21.1 21⁄4 (2.250) | 58.242 | 57.455 | 81.813 | 11.176 | 11.227 | 7.849 | ||||||
| ASME B18.21.1 21⁄2 (2.500) | 64.592 | 63.805 | 88.163 | 11.176 | 11.227 | 7.849 | ||||||
| ASME B18.21.1 23⁄4 (2.750) | 70.942 | 70.155 | 97.13 | 11.633 | 12.471 | 8.738 | ||||||
| ASME B18.21.1 3 (3.000) | 77.292 | 76.505 | 103.48 | 11.633 | 12.471 | 8.738 | ||||||
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