ASME B18.21.1 Internal External Tooth Lock Washers
| Size | A | B | C | |||
|---|---|---|---|---|---|---|
| Inside Diameter | Outside Diameter | Thickness | ||||
| Max. | Min. | Max. | Min. | Max. | Min. | |
| ASME B18.21.1 - No. 4 | 0.123 | 0.115 | 0.475 | 0.46 | 0.021 | 0.016 |
| ASME B18.21.1 - No. 4 | 0.123 | 0.115 | 0.51 | 0.495 | 0.021 | 0.017 |
| ASME B18.21.1 - No. 4 | 0.123 | 0.115 | 0.61 | 0.58 | 0.021 | 0.017 |
| ASME B18.21.1 - No. 6 | 0.15 | 0.141 | 0.51 | 0.495 | 0.028 | 0.023 |
| ASME B18.21.1 - No. 6 | 0.15 | 0.141 | 0.61 | 0.58 | 0.028 | 0.023 |
| ASME B18.21.1 - No. 6 | 0.15 | 0.141 | 0.69 | 0.67 | 0.028 | 0.023 |
| ASME B18.21.1 - No. 8 | 0.176 | 0.168 | 0.61 | 0.58 | 0.034 | 0.028 |
| ASME B18.21.1 - No. 8 | 0.176 | 0.168 | 0.69 | 0.67 | 0.034 | 0.028 |
| ASME B18.21.1 - No. 8 | 0.176 | 0.168 | 0.76 | 0.74 | 0.034 | 0.028 |
| ASME B18.21.1 - No. 10 | 0.204 | 0.195 | 0.61 | 0.58 | 0.034 | 0.028 |
| ASME B18.21.1 - No. 10 | 0.204 | 0.195 | 0.69 | 0.67 | 0.04 | 0.032 |
| ASME B18.21.1 - No. 10 | 0.204 | 0.195 | 0.76 | 0.74 | 0.04 | 0.032 |
| ASME B18.21.1 - No. 10 | 0.204 | 0.195 | 0.9 | 0.88 | 0.04 | 0.032 |
| ASME B18.21.1 - No. 12 | 0.231 | 0.221 | 0.69 | 0.67 | 0.04 | 0.032 |
| ASME B18.21.1 - No. 12 | 0.231 | 0.221 | 0.76 | 0.725 | 0.04 | 0.032 |
| ASME B18.21.1 - No. 12 | 0.231 | 0.221 | 0.9 | 0.88 | 0.04 | 0.032 |
| ASME B18.21.1 - No. 12 | 0.231 | 0.221 | 0.985 | 0.965 | 0.045 | 0.037 |
| ASME B18.21.1 - 1 ⁄ 4 | 0.267 | 0.256 | 0.76 | 0.725 | 0.04 | 0.032 |
| ASME B18.21.1 - 1 ⁄ 4 | 0.267 | 0.256 | 0.9 | 0.88 | 0.045 | 0.037 |
| ASME B18.21.1 - 1 ⁄ 4 | 0.267 | 0.256 | 0.985 | 0.965 | 0.045 | 0.037 |
| ASME B18.21.1 - 1 ⁄ 4 | 0.267 | 0.256 | 1.07 | 1.045 | 0.045 | 0.037 |
| Size | A | B | C | |||
|---|---|---|---|---|---|---|
| Inside Diameter | Outside Diameter | Thickness | ||||
| Max. | Min. | Max. | Min. | Max. | Min. | |
| ASME B18.21.1 - 5 ⁄ 16 | 0.332 | 0.32 | 0.9 | 0.865 | 0.04 | 0.032 |
| ASME B18.21.1 - 5 ⁄ 16 | 0.332 | 0.32 | 0.985 | 0.965 | 0.045 | 0.037 |
| ASME B18.21.1 - 5 ⁄ 16 | 0.332 | 0.32 | 1.07 | 1.045 | 0.05 | 0.042 |
| ASME B18.21.1 - 5 ⁄ 16 | 0.332 | 0.32 | 1.155 | 1.13 | 0.05 | 0.042 |
| ASME B18.21.1 - 3 ⁄ 8 | 0.398 | 0.384 | 0.985 | 0.965 | 0.045 | 0.037 |
| ASME B18.21.1 - 3 ⁄ 8 | 0.398 | 0.384 | 1.07 | 1.045 | 0.05 | 0.042 |
| ASME B18.21.1 - 3 ⁄ 8 | 0.398 | 0.384 | 1.07 | 1.13 | 0.05 | 0.042 |
| ASME B18.21.1 - 3 ⁄ 8 | 0.398 | 0.384 | 1.26 | 1.22 | 0.05 | 0.042 |
| ASME B18.21.1 - 7 ⁄ 16 | 0.464 | 0.448 | 1.07 | 1.045 | 0.05 | 0.042 |
| ASME B18.21.1 - 7 ⁄ 16 | 0.464 | 0.448 | 1.155 | 1.13 | 0.05 | 0.042 |
| ASME B18.21.1 - 7 ⁄ 16 | 0.464 | 0.448 | 1.26 | 1.22 | 0.055 | 0.047 |
| ASME B18.21.1 - 7 ⁄ 16 | 0.464 | 0.448 | 1.315 | 1.29 | 0.055 | 0.047 |
| ASME B18.21.1 - 1 ⁄ 2 | 0.53 | 0.512 | 1.26 | 1.22 | 0.055 | 0.047 |
| ASME B18.21.1 - 1 ⁄ 2 | 0.53 | 0.512 | 1.315 | 1.29 | 0.055 | 0.047 |
| ASME B18.21.1 - 1 ⁄ 2 | 0.53 | 0.512 | 1.41 | 1.38 | 0.06 | 0.052 |
| ASME B18.21.1 - 1 ⁄ 2 | 0.53 | 0.512 | 1.62 | 1.59 | 0.067 | 0.059 |
| ASME B18.21.1 - 9⁄ 16 | 0.596 | 0.576 | 1.315 | 1.29 | 0.055 | 0.047 |
| ASME B18.21.1 - 9⁄ 16 | 0.596 | 0.576 | 1.43 | 1.38 | 0.06 | 0.052 |
| ASME B18.21.1 - 9⁄ 16 | 0.596 | 0.576 | 1.62 | 1.59 | 0.067 | 0.059 |
| ASME B18.21.1 - 9⁄ 16 | 0.596 | 0.576 | 1.83 | 1.797 | 0.067 | 0.059 |
| ASME B18.21.1 - 5 ⁄ 8 | 0.663 | 0.64 | 1.41 | 1.38 | 0.06 | 0.052 |
| ASME B18.21.1 - 5 ⁄ 8 | 0.663 | 0.64 | 1.62 | 1.59 | 0.067 | 0.059 |
| ASME B18.21.1 - 5 ⁄ 8 | 0.663 | 0.64 | 1.83 | 1.797 | 0.067 | 0.059 |
| ASME B18.21.1 - 5 ⁄ 8 | 0.663 | 0.64 | 1.975 | 1.935 | 0.067 | 0.059 |