| 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 | mm | 47.2 | 37 | 36.61~37.39 | 1.75 | 1.69~1.75 | 5.1 | |
| CTW | mm | 50.6 | 39.6 | 39.21~39.99 | 1.75 | 1.69~1.75 | 5.5 | |
| CTW | mm | 54.1 | 42.3 | 41.91~42.69 | 1.75 | 1.69~1.75 | 5.9 | |
| CTW | mm | 56.4 | 44 | 43.61~44.39 | 2 | 1.93~2 | 6.2 | |
| CTW | mm | 58.6 | 46 | 45.61~46.39 | 2 | 1.93~2 | 6.3 | |
| CTW | mm | 61.5 | 48.5 | 48.11~48.89 | 2 | 1.93~2 | 6.5 | |
| CTW | inch | 0.157 | 0.086 | 0.084~0.088 | 0.016 | 0.014~0.015 | 0.035 | |
| CTW | inch | 0.197 | 0.118 | 0.116~0.120 | 0.016 | 0.014~0.015 | 0.039 | |
| CTW | inch | 0.244 | 0.15 | 0.147~0.152 | 0.024 | 0.022~0.023 | 0.047 | |
| CTW | inch | 0.291 | 0.189 | 0.186~0.192 | 0.028 | 0.026~0.027 | 0.051 | |
| CTW | inch | 0.339 | 0.228 | 0.226~0.231 | 0.031 | 0.030~0.031 | 0.055 | |
| CTW | inch | 0.394 | 0.268 | 0.265~0.271 | 0.031 | 0.030~0.031 | 0.063 | |
| CTW | inch | 0.441 | 0.307 | 0.304~0.310 | 0.039 | 0.038~0.039 | 0.067 | |
| CTW | inch | 0.478 | 0.344 | 0.341~0.348 | 0.039 | 0.038~0.039 | 0.067 | |
| CTW | inch | 0.52 | 0.38 | 0.373~0.387 | 0.039 | 0.038~0.039 | 0.071 | |