ASME B18.21.1 Countersunk External Tooth Lock Washers
ASME B18.21.1 Countersunk External Tooth Lock Washers Dimensions (mm)
| Nominal Size | Inside Diameter, A | Outside Diameter, B | Thickness, C | Length, D | |||
|---|---|---|---|---|---|---|---|
| Max. | Min. | Reference | Max. | Min. | Max. | Min. | |
| ASME B18.21.1 #8 (0.164) | 4.496 | 4.242 | 8.179 | 0.533 | 0.432 | 2.515 | 2.108 |
| ASME B18.21.1 #10 (0.190) | 5.207 | 4.953 | 8.992 | 0.635 | 0.508 | 2.667 | 2.235 |
| ASME B18.21.1 #12 (0.216) | 5.867 | 5.588 | 10.693 | 0.635 | 0.508 | 3.251 | 2.997 |
| ASME B18.21.1 1⁄4 (0.250) | 6.782 | 6.477 | 11.532 | 0.635 | 0.508 | 3.251 | 2.870 |
| ASME B18.21.1 #16 (0.268) | 7.290 | 12.827 | 0.711 | 0.584 | 3.734 | 3.480 | - |
| ASME B18.21.1 5⁄16 (0.3125) | 8.458 | 8.077 | 15.215 | 0.711 | 0.584 | 4.877 | 4.191 |
| ASME B18.21.1 3⁄8 (0.375) | 10.109 | 9.728 | 19.431 | 0.864 | 0.711 | 6.477 | 6.147 |
| ASME B18.21.1 7⁄16 (0.4375) | 11.760 | 11.379 | 22.022 | 1.143 | 0.940 | 6.858 | 6.604 |
| ASME B18.21.1 1⁄2 (0.500) | 13.437 | 13.005 | 24.790 | 1.143 | 0.940 | 7.722 | 7.468 |
ASME B18.21.1 Countersunk External Tooth Lock Washers Dimensions (Inch)
| Nominal Size | Inside Diameter, A | Outside Diameter, B | Thickness, C | Length, D | |||
|---|---|---|---|---|---|---|---|
| Max. | Min. | Reference | Max. | Min. | Max. | Min. | |
| ASME B18.21.1 #8 (0.164) | 4.496 | 4.242 | 8.179 | 0.533 | 0.432 | 2.515 | 2.108 |
| ASME B18.21.1 #10 (0.190) | 5.207 | 4.953 | 8.992 | 0.635 | 0.508 | 2.667 | 2.235 |
| ASME B18.21.1 #12 (0.216) | 5.867 | 5.588 | 10.693 | 0.635 | 0.508 | 3.251 | 2.997 |
| ASME B18.21.1 1⁄4 (0.250) | 6.782 | 6.477 | 11.532 | 0.635 | 0.508 | 3.251 | 2.870 |
| ASME B18.21.1 #16 (0.268) | 7.290 | 12.827 | 0.711 | 0.584 | 3.734 | 3.480 | NaN |
| ASME B18.21.1 5⁄16 (0.3125) | 8.458 | 8.077 | 15.215 | 0.711 | 0.584 | 4.877 | 4.191 |
| ASME B18.21.1 3⁄8 (0.375) | 10.109 | 9.728 | 19.431 | 0.864 | 0.711 | 6.477 | 6.147 |
| ASME B18.21.1 7⁄16 (0.4375) | 11.760 | 11.379 | 22.022 | 1.143 | 0.940 | 6.858 | 6.604 |
| ASME B18.21.1 1⁄2 (0.500) | 13.437 | 13.005 | 24.790 | 1.143 | 0.940 | 7.722 | 7.468 |