ASME B18.21.1 Hi Collar Helical Spring Lock Washers
ASME B18.21.1 Hi Collar 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 #4 (0.112) | 3.048 | 2.896 | 4.394 | 0.559 | 0.559 | 0.381 |
| ASME B18.21.1 #5 (0.125) | 3.378 | 3.226 | 5.131 | 0.762 | 0.762 | 0.533 |
| ASME B18.21.1 #6 (0.138) | 3.759 | 3.581 | 5.486 | 0.762 | 0.762 | 0.533 |
| ASME B18.21.1 #8 (0.164) | 4.42 | 4.242 | 6.782 | 1.194 | 1.067 | 0.737 |
| ASME B18.21.1 #10 (0.190) | 5.08 | 4.902 | 7.468 | 1.194 | 1.067 | 0.737 |
| ASME B18.21.1 1⁄4 (0.250) | 6.604 | 6.401 | 9.22 | 1.981 | 1.194 | 0.838 |
| ASME B18.21.1 5⁄16 (0.3125) | 8.179 | 7.976 | 11.608 | 2.362 | 1.575 | 1.092 |
| ASME B18.21.1 3⁄8 (0.375) | 9.779 | 9.576 | 13.97 | 3.175 | 1.93 | 1.346 |
| ASME B18.21.1 7⁄16 (0.4375) | 11.43 | 11.176 | 16.358 | 3.556 | 2.286 | 1.6 |
| ASME B18.21.1 1⁄2 (0.500) | 13.005 | 12.751 | 18.618 | 4.369 | 2.616 | 1.829 |
| ASME B18.21.1 5⁄8 (0.625) | 16.281 | 15.951 | 23.292 | 5.156 | 3.175 | 2.21 |
| ASME B18.21.1 3⁄4 (0.750) | 19.456 | 19.126 | 28.067 | 5.537 | 3.912 | 2.743 |
| ASME B18.21.1 7⁄8 (0.875) | 22.708 | 22.301 | 32.791 | 5.944 | 4.623 | 3.226 |
| ASME B18.21.1 1 (1.000) | 26.01 | 25.476 | 37.541 | 6.35 | 5.283 | 3.708 |
| ASME B18.21.1 11⁄8 (1.125) | 29.286 | 28.677 | 42.24 | 7.95 | 5.994 | 4.191 |
| ASME B18.21.1 11⁄4 (1.250) | 32.512 | 31.852 | 45.466 | 7.95 | 5.994 | 4.191 |
| ASME B18.21.1 13⁄8 (1.375) | 35.763 | 35.027 | 51.587 | 9.525 | 7.417 | 5.182 |
| ASME B18.21.1 11⁄2 (1.500) | 38.964 | 38.202 | 54.839 | 9.525 | 7.417 | 5.182 |
| ASME B18.21.1 13⁄4 (1.750) | 45.441 | 44.653 | 65.938 | 11.913 | 9.728 | 6.807 |
| ASME B18.21.1 2 (2.000) | 51.791 | 51.003 | 72.288 | 11.913 | 9.728 | 6.807 |
| ASME B18.21.1 21⁄4 (2.250) | 58.242 | 57.455 | 84.963 | 12.903 | 12.903 | 9.042 |
| ASME B18.21.1 21⁄2 (2.500) | 64.592 | 63.805 | 91.313 | 12.903 | 12.903 | 9.042 |
| ASME B18.21.1 23⁄4 (2.750) | 70.942 | 70.155 | 104.013 | 16.078 | 16.078 | 11.252 |
| ASME B18.21.1 3 (3.000) | 77.292 | 76.505 | 110.363 | 16.078 | 16.078 | 11.252 |
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ASME B18.21.1 Hi Collar 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 #4 (0.112) | 3.048 | 2.896 | 4.394 | 0.559 | 0.559 | 0.381 |
| ASME B18.21.1 #5 (0.125) | 3.378 | 3.226 | 5.131 | 0.762 | 0.762 | 0.533 |
| ASME B18.21.1 #6 (0.138) | 3.759 | 3.581 | 5.486 | 0.762 | 0.762 | 0.533 |
| ASME B18.21.1 #8 (0.164) | 4.42 | 4.242 | 6.782 | 1.194 | 1.067 | 0.737 |
| ASME B18.21.1 #10 (0.190) | 5.08 | 4.902 | 7.468 | 1.194 | 1.067 | 0.737 |
| ASME B18.21.1 1⁄4 (0.250) | 6.604 | 6.401 | 9.22 | 1.981 | 1.194 | 0.838 |
| ASME B18.21.1 5⁄16 (0.3125) | 8.179 | 7.976 | 11.608 | 2.362 | 1.575 | 1.092 |
| ASME B18.21.1 3⁄8 (0.375) | 9.779 | 9.576 | 13.97 | 3.175 | 1.93 | 1.346 |
| ASME B18.21.1 7⁄16 (0.4375) | 11.43 | 11.176 | 16.358 | 3.556 | 2.286 | 1.6 |
| ASME B18.21.1 1⁄2 (0.500) | 13.005 | 12.751 | 18.618 | 4.369 | 2.616 | 1.829 |
| ASME B18.21.1 5⁄8 (0.625) | 16.281 | 15.951 | 23.292 | 5.156 | 3.175 | 2.21 |
| ASME B18.21.1 3⁄4 (0.750) | 19.456 | 19.126 | 28.067 | 5.537 | 3.912 | 2.743 |
| ASME B18.21.1 7⁄8 (0.875) | 22.708 | 22.301 | 32.791 | 5.944 | 4.623 | 3.226 |
| ASME B18.21.1 1 (1.000) | 26.01 | 25.476 | 37.541 | 6.35 | 5.283 | 3.708 |
| ASME B18.21.1 11⁄8 (1.125) | 29.286 | 28.677 | 42.24 | 7.95 | 5.994 | 4.191 |
| ASME B18.21.1 11⁄4 (1.250) | 32.512 | 31.852 | 45.466 | 7.95 | 5.994 | 4.191 |
| ASME B18.21.1 13⁄8 (1.375) | 35.763 | 35.027 | 51.587 | 9.525 | 7.417 | 5.182 |
| ASME B18.21.1 11⁄2 (1.500) | 38.964 | 38.202 | 54.839 | 9.525 | 7.417 | 5.182 |
| ASME B18.21.1 13⁄4 (1.750) | 45.441 | 44.653 | 65.938 | 11.913 | 9.728 | 6.807 |
| ASME B18.21.1 2 (2.000) | 51.791 | 51.003 | 72.288 | 11.913 | 9.728 | 6.807 |
| ASME B18.21.1 21⁄4 (2.250) | 58.242 | 57.455 | 84.963 | 12.903 | 12.903 | 9.042 |
| ASME B18.21.1 21⁄2 (2.500) | 64.592 | 63.805 | 91.313 | 12.903 | 12.903 | 9.042 |
| ASME B18.21.1 23⁄4 (2.750) | 70.942 | 70.155 | 104.013 | 16.078 | 16.078 | 11.252 |
| ASME B18.21.1 3 (3.000) | 77.292 | 76.505 | 110.363 | 16.078 | 16.078 | 11.252 |
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