| 扣環 | 截面 | |||||||
|---|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 內徑 | 公差 | 厚度 | 公差 | 最大 |
| CTW | inch | 0.311 | 0.211 | 0.206~0.213 | 0.024 | 0.023~0.025 | 0.05 | |
| CTW | inch | 0.376 | 0.27 | 0.265~0.272 | 0.024 | 0.023~0.025 | 0.053 | |
| CTW | inch | 0.448 | 0.328 | 0.323~0.330 | 0.024 | 0.023~0.025 | 0.06 | |
| CTW | inch | 0.485 | 0.359 | 0.354~0.361 | 0.024 | 0.023~0.025 | 0.063 | |
| CTW | inch | 0.516 | 0.386 | 0.381~0.388 | 0.024 | 0.023~0.025 | 0.065 | |
| CTW | inch | 0.551 | 0.415 | 0.410~0.417 | 0.024 | 0.023~0.025 | 0.068 | |
| CTW | inch | 0.581 | 0.441 | 0.436~0.446 | 0.035 | 0.034~0.037 | 0.07 | |
| CTW | inch | 0.652 | 0.497 | 0.491~0.502 | 0.035 | 0.034~0.037 | 0.078 | |
| CTW | inch | 0.915 | 0.721 | 0.714~0.727 | 0.055 | 0.053~0.057 | 0.097 | |