| 扣環 | |||||||
|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 公差 | 內徑 | 公差 | 厚度 |
| CRTW | mm | 6.2 | 6.1~6.2 | 2.2 | 2~2.4 | 0.25 | |
| CRTW | mm | 8.2 | 8.1~8.2 | 3.6 | 3.4~3.8 | 0.25 | |
| CRTW | mm | 10.2 | 10.1~10.2 | 5 | 4.8~5.2 | 0.25 | |
| CRTW | mm | 12.2 | 12.1~12.2 | 6.6 | 6.4~6.8 | 0.25 | |
| CRTW | mm | 14.2 | 14.1~14.2 | 8.2 | 8~8.4 | 0.25 | |
| CRTW | mm | 16.2 | 16.1~16.2 | 9.8 | 9.6~10 | 0.25 | |
| CRTW | mm | 18.2 | 18.1~18.2 | 11 | 10.8~11.2 | 0.4 | |
| CRTW | inch | 0.244 | 0.241~0.244 | 0.087 | 0.079~0.094 | 0.01 | |
| CRTW | inch | 0.323 | 0.319~0.322 | 0.142 | 0.134~0.149 | 0.01 | |
| CRTW | inch | 0.402 | 0.398~0.401 | 0.197 | 0.189~0.204 | 0.01 | |
| CRTW | inch | 0.48 | 0.477~0.480 | 0.26 | 0.252~0.267 | 0.01 | |
| CRTW | inch | 0.559 | 0.556~0.559 | 0.323 | 0.315~0.330 | 0.01 | |
| CRTW | inch | 0.638 | 0.634~0.637 | 0.386 | 0.378~0.393 | 0.01 | |
| CRTW | inch | 0.717 | 0.713~0.716 | 0.433 | 0.426~0.440 | 0.016 | |