| 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 | 3.98 | 2.18 | 2.12~2.24 | 0.4 | 0.35~0.4 | 0.9 | |
| CTW | mm | 5 | 3 | 2.94~3.06 | 0.4 | 0.35~0.4 | 1 | |
| CTW | mm | 6.2 | 3.8 | 3.72~3.88 | 0.6 | 0.55~0.6 | 1.2 | |
| CTW | mm | 7.4 | 4.8 | 4.72~4.88 | 0.7 | 0.65~0.7 | 1.3 | |
| CTW | mm | 8.6 | 5.8 | 5.72~5.88 | 0.8 | 0.75~0.8 | 1.4 | |
| CTW | mm | 10 | 6.8 | 6.71~6.89 | 0.8 | 0.75~0.8 | 1.6 | |
| CTW | mm | 11.2 | 7.8 | 7.71~7.89 | 1 | 0.94~1 | 1.7 | |
| CTW | mm | 12.15 | 8.75 | 8.66~8.84 | 1 | 0.94~1 | 1.7 | |
| CTW | mm | 13.2 | 9.65 | 9.47~9.83 | 1 | 0.94~1 | 1.8 | |
| CTW | mm | 14.35 | 10.55 | 10.37~10.73 | 1 | 0.94~1 | 1.9 | |
| CTW | mm | 15.4 | 11.4 | 11.22~11.58 | 1 | 0.94~1 | 2 | |
| CTW | mm | 16.3 | 12.3 | 12.12~12.48 | 1 | 0.94~1 | 2 | |
| CTW | mm | 17.4 | 13.2 | 13.02~13.38 | 1 | 0.94~1 | 2.1 | |
| CTW | mm | 18.5 | 14.1 | 13.92~14.28 | 1 | 0.94~1 | 2.2 | |
| CTW | mm | 19.4 | 14.9 | 14.72~15.08 | 1 | 0.94~1 | 2.25 | |