| 扣環 | |||||||
|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 公差 | 內徑 | 公差 | 厚度 |
| CSTW | mm | 6 | 5.8~6.2 | 1.9 | 1.85~1.95 | 0.25 | |
| CSTW | mm | 6.4 | 6.2~6.6 | 2.2 | 2.2~2.3 | 0.25 | |
| CSTW | mm | 8 | 7.8~8.2 | 2.8 | 2.8~2.9 | 0.25 | |
| CSTW | mm | 7.5 | 7.3~7.7 | 3.3 | 3.2~3.3 | 0.25 | |
| CSTW | mm | 9 | 8.8~9.2 | 3.8 | 3.8~3.9 | 0.25 | |
| CSTW | mm | 10 | 9.8~10.2 | 4.3 | 4.3~4.4 | 0.25 | |
| CSTW | mm | 10 | 9.8~10.2 | 4.8 | 4.8~4.9 | 0.25 | |
| CSTW | mm | 11 | 10.8~11.2 | 5.8 | 5.8~5.9 | 0.25 | |
| CSTW | mm | 13 | 12.8~13.2 | 7.8 | 7.8~7.9 | 0.25 | |
| CSTW | mm | 15.4 | 15.2~15.6 | 9.8 | 9.8~9.9 | 0.25 | |
| CSTW | mm | 17.8 | 17.5~18.1 | 11.8 | 11.8~11.9 | 0.4 | |
| CSTW | mm | 20.3 | 20~20.6 | 13.8 | 13.8~13.9 | 0.4 | |
| CSTW | mm | 22.8 | 22.5~23.1 | 15.8 | 15.8~15.9 | 0.4 | |
| CSTW | mm | 25 | 24.7~25.3 | 17.8 | 17.8~17.9 | 0.4 | |
| CSTW | mm | 25.4 | 25.1~25.7 | 18.7 | 18.55~18.85 | 0.4 | |