DIN6888 半圆键标准
半圆键
执行标准:DIN6888

| 公称直径D | h | b | L |
| 7 | 2.6 | 1.5 | 6.79 |
| 7 | 2.6 | 2 | 6.79 |
| 10 | 3.7 | 2 | 9.66 |
| 13 | 5 | 2 | 12.65 |
| 10 | 3.7 | 3 | 9.66 |
| 13 | 5 | 3 | 12.65 |
| 16 | 6.5 | 3 | 15.72 |
| 13 | 5 | 4 | 12.65 |
| 16 | 6.5 | 4 | 15.72 |
| 19 | 7.5 | 4 | 18.57 |
| 16 | 6.5 | 5 | 15.72 |
| 19 | 7.5 | 5 | 19.57 |
| 22 | 9 | 5 | 21.63 |
| 19 | 7.5 | 6 | 24.49 |
| 22 | 9 | 6 | 21.63 |
| 25 | 10 | 6 | 27 35 |
| 22 | 9 | 8 | 31.43 |
| 28 | 11 | 8 | 27.35 |