| 扣環 | 截面 | 孔徑 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 公差 | 厚度 | 公差 | 最大 | 公差 | 值 |
| IRTW | mm | 13.1 | 12.97~13.52 | 0.6 | 0.55~0.6 | 1.8 | ±0.1 | 1 | |
| IRTW | mm | 16.1 | 15.97~16.52 | 0.8 | 0.75~0.8 | 2 | ±0.1 | 1 | |
| IRTW | mm | 17.3 | 17.17~17.72 | 1 | 0.94~1 | 2.1 | ±0.1 | 1.3 | |
| IRTW | mm | 18.3 | 18.17~18.72 | 1 | 0.94~1 | 2.1 | ±0.1 | 1.3 | |
| IRTW | mm | 19.5 | 19.37~19.92 | 1 | 0.94~1 | 2.2 | ±0.1 | 1.3 | |
| IRTW | mm | 20.5 | 20.37~20.92 | 1 | 0.94~1 | 2.2 | ±0.1 | 1.3 | |
| IRTW | mm | 21.5 | 21.37~21.92 | 1 | 0.94~1 | 2.3 | ±0.1 | 1.3 | |
| IRTW | mm | 22.5 | 22.37~22.92 | 1 | 0.94~1 | 2.4 | ±0.1 | 1.3 | |
| IRTW | mm | 23.5 | 23.37~23.92 | 1 | 0.94~1 | 2.4 | ±0.1 | 1.3 | |
| IRTW | mm | 25.9 | 25.69~26.32 | 1.2 | 1.14~1.2 | 2.8 | ±0.1 | 1.5 | |
| IRTW | mm | 26.9 | 26.69~27.32 | 1.2 | 1.14~1.2 | 2.8 | ±0.1 | 1.5 | |
| IRTW | mm | 27.9 | 27.69~28.32 | 1.2 | 1.14~1.2 | 3 | ±0.1 | 1.5 | |
| IRTW | mm | 29.1 | 28.89~29.52 | 1.2 | 1.14~1.2 | 3 | ±0.1 | 1.5 | |
| IRTW | mm | 30.1 | 29.85~30.6 | 1.2 | 1.14~1.2 | 3.1 | ±0.1 | 1.5 | |
| IRTW | mm | 32.1 | 31.85~32.6 | 1.2 | 1.14~1.2 | 3.2 | ±0.1 | 1.5 | |