| 扣環 | |||||||
|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 內徑 | 公差 | 厚度 | 公差 |
| ETW | mm | 27.2 | 13.9 | 13.75~14 | 1.3 | 1.24~1.36 | |
| ETW | mm | 30 | 15.6 | 15.45~15.7 | 1.3 | 1.24~1.36 | |
| ETW | mm | 33 | 17 | 16.85~17.1 | 1.3 | 1.24~1.36 | |
| ETW | mm | 37.1 | 19.5 | 19.35~19.6 | 1.3 | 1.24~1.36 | |
| ETW | inch | 0.079 | 0.025 | 0.023~0.026 | 0.01 | 0.008~0.011 | |
| ETW | inch | 0.157 | 0.051 | 0.049~0.052 | 0.01 | 0.008~0.011 | |
| ETW | inch | 0.22 | 0.083 | 0.080~0.083 | 0.016 | 0.014~0.018 | |
| ETW | inch | 0.283 | 0.114 | 0.112~0.115 | 0.024 | 0.022~0.025 | |
| ETW | inch | 0.335 | 0.146 | 0.143~0.146 | 0.024 | 0.022~0.025 | |
| ETW | inch | 0.437 | 0.185 | 0.182~0.186 | 0.024 | 0.022~0.025 | |
| ETW | inch | 0.528 | 0.207 | 0.204~0.207 | 0.024 | 0.022~0.025 | |
| ETW | inch | 0.575 | 0.242 | 0.239~0.244 | 0.024 | 0.022~0.025 | |
| ETW | inch | 0.622 | 0.268 | 0.264~0.269 | 0.035 | 0.034~0.037 | |
| ETW | inch | 0.661 | 0.299 | 0.296~0.301 | 0.035 | 0.034~0.037 | |
| ETW | inch | 0.685 | 0.337 | 0.333~0.338 | 0.035 | 0.034~0.037 | |