| 扣環 | |||||||
|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 內徑 | 公差 | 厚度 | 公差 |
| ETW | inch | 0.5 | 0.243 | 0.239~0.245 | 0.025 | 0.023~0.027 | |
| ETW | inch | 0.67 | 0.243 | 0.239~0.245 | 0.025 | 0.023~0.027 | |
| ETW | inch | 0.588 | 0.242 | 0.239~0.245 | 0.025 | 0.023~0.027 | |
| ETW | inch | 0.567 | 0.303 | 0.299~0.305 | 0.035 | 0.033~0.037 | |
| ETW | inch | 0.66 | 0.3 | 0.296~0.302 | 0.035 | 0.033~0.037 | |
| ETW | inch | 0.687 | 0.337 | 0.333~0.339 | 0.035 | 0.033~0.037 | |
| ETW | inch | 0.6 | 0.375 | 0.371~0.377 | 0.035 | 0.033~0.037 | |
| ETW | inch | 0.8 | 0.392 | 0.388~0.394 | 0.042 | 0.040~0.044 | |
| ETW | inch | 0.87 | 0.43 | 0.426~0.434 | 0.042 | 0.040~0.044 | |
| ETW | inch | 0.94 | 0.48 | 0.475~0.483 | 0.042 | 0.040~0.044 | |
| ETW | inch | 1 | 0.616 | 0.611~0.619 | 0.05 | 0.048~0.052 | |
| ETW | inch | 1.12 | 0.574 | 0.569~0.577 | 0.05 | 0.048~0.052 | |
| ETW | inch | 1.3 | 0.668 | 0.663~0.671 | 0.05 | 0.048~0.052 | |
| ETW | inch | 1.5 | 0.822 | 0.817~0.825 | 0.05 | 0.048~0.052 | |
| ETW | inch | 1.626 | 1.066 | 1.056~1.072 | 0.062 | 0.059~0.065 | |