| 扣環 | 截面 | 孔徑 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 公差 | 內徑 | 厚度 | 公差 | 最大 | 值 | 公差 |
| IRTW | mm | 27.9 | 27.7~28.1 | 22.3 | 1.2 | 1.14~1.26 | 2.8 | 1.2 | ±0.4 | |
| IRTW | mm | 30.1 | 29.85~30.35 | 24.1 | 1.2 | 1.14~1.26 | 3 | 1.2 | ±0.4 | |
| IRTW | mm | 32.1 | 31.85~32.35 | 25.7 | 1.2 | 1.14~1.26 | 3.2 | 1.4 | ±0.4 | |
| IRTW | mm | 34.4 | 34.15~34.65 | 27.4 | 1.2 | 1.14~1.26 | 3.5 | 1.6 | ±0.4 | |
| IRTW | mm | 36.5 | 36.25~36.75 | 29.1 | 1.5 | 1.44~1.56 | 3.7 | 1.6 | ±0.4 | |
| IRTW | mm | 37.8 | 37.55~38.05 | 30 | 1.5 | 1.44~1.56 | 3.9 | 1.6 | ±0.4 | |
| IRTW | mm | 38.8 | 38.55~39.05 | 30.8 | 1.5 | 1.44~1.56 | 4 | 1.6 | ±0.4 | |
| IRTW | mm | 39.8 | 39.55~40.05 | 31.6 | 1.5 | 1.44~1.56 | 4.1 | 1.6 | ±0.4 | |
| IRTW | mm | 40.8 | 40.55~41.05 | 32.4 | 1.5 | 1.44~1.56 | 4.2 | 1.6 | ±0.4 | |
| IRTW | mm | 43.5 | 43.1~43.9 | 34.7 | 1.75 | 1.68~1.82 | 4.4 | 2 | ±0.4 | |
| IRTW | mm | 45.5 | 45.1~45.9 | 36.3 | 1.75 | 1.68~1.82 | 4.6 | 2 | ±0.5 | |
| IRTW | mm | 48.5 | 48.1~48.9 | 38.9 | 1.75 | 1.68~1.82 | 4.8 | 2 | ±0.5 | |
| IRTW | mm | 50.5 | 50.05~50.95 | 40.7 | 1.75 | 1.68~1.82 | 4.9 | 2 | ±0.5 | |
| IRTW | mm | 51.5 | 51.05~51.95 | 41.5 | 1.75 | 1.68~1.82 | 5 | 2 | ±0.5 | |
| IRTW | mm | 54.2 | 53.75~54.65 | 44 | 2 | 1.93~2.07 | 5.1 | 2.2 | ±0.5 | |