| 扣環 | |||||||
|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 內徑 | 公差 | 厚度 | 公差 |
| UTW | mm | 8 | 3.2 | 3.1~3.23 | 0.6 | 0.56~0.64 | |
| UTW | mm | 9 | 4 | 3.9~4.03 | 0.7 | 0.66~0.74 | |
| UTW | mm | 11.6 | 5 | 4.9~5.03 | 0.7 | 0.66~0.74 | |
| UTW | mm | 13.5 | 6 | 5.85~6.05 | 0.7 | 0.66~0.74 | |
| UTW | mm | 15 | 7 | 6.85~7.05 | 0.9 | 0.85~0.95 | |
| UTW | mm | 17.5 | 8 | 7.8~8.05 | 1 | 0.95~1.05 | |
| UTW | inch | 0.315 | 0.126 | 0.123~0.127 | 0.024 | 0.023~0.025 | |
| UTW | inch | 0.354 | 0.157 | 0.154~0.158 | 0.028 | 0.026~0.029 | |
| UTW | inch | 0.457 | 0.197 | 0.193~0.198 | 0.028 | 0.026~0.029 | |
| UTW | inch | 0.531 | 0.236 | 0.231~0.238 | 0.028 | 0.026~0.029 | |
| UTW | inch | 0.591 | 0.276 | 0.270~0.277 | 0.035 | 0.034~0.037 | |
| UTW | inch | 0.689 | 0.315 | 0.308~0.316 | 0.039 | 0.038~0.041 | |