| 扣環 | 截面 | 孔徑 | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 內徑 | 公差 | 厚度 | 公差 | 最大 | 值 | 公差 |
| ISTW | mm | 51.3 | 41.5 | 41.1~41.9 | 1.75 | 1.68~1.82 | 4.9 | 2 | ±0.5 | |
| ISTW | mm | 55.1 | 44.5 | 44.1~44.9 | 1.75 | 1.68~1.82 | 5.3 | 2 | ±0.5 | |
| ISTW | mm | 56.8 | 45.8 | 45.4~46.2 | 2 | 1.93~2.07 | 5.5 | 2.5 | ±0.5 | |
| ISTW | mm | 59 | 47.8 | 47.4~48.2 | 2 | 1.93~2.07 | 5.6 | 2.5 | ±0.5 | |
| ISTW | mm | 62.6 | 50.8 | 50.35~51.25 | 2 | 1.93~2.07 | 5.9 | 2.5 | ±0.5 | |
| ISTW | mm | 63.8 | 51.8 | 51.35~52.25 | 2 | 1.93~2.07 | 6 | 2.5 | ±0.5 | |
| ISTW | mm | 66 | 53.8 | 53.35~54.25 | 2 | 1.93~2.07 | 6.1 | 2.5 | ±0.5 | |
| ISTW | mm | 68.4 | 55.8 | 55.35~56.25 | 2 | 1.93~2.07 | 6.3 | 2.5 | ±0.5 | |
| ISTW | mm | 70.8 | 57.8 | 57.35~58.25 | 2 | 1.93~2.07 | 6.5 | 2.5 | ±0.5 | |
| ISTW | mm | 72 | 58.8 | 58.35~59.25 | 2 | 1.93~2.07 | 6.6 | 2.5 | ±0.5 | |
| ISTW | mm | 74.4 | 60.8 | 60.35~61.25 | 2.5 | 2.42~2.58 | 6.8 | 3 | ±0.5 | |
| ISTW | mm | 77.5 | 63.5 | 63.05~63.95 | 2.5 | 2.42~2.58 | 7 | 3 | ±0.5 | |
| ISTW | mm | 79.9 | 65.5 | 65.05~65.95 | 2.5 | 2.42~2.58 | 7.2 | 3 | ±0.5 | |
| ISTW | mm | 82.1 | 67.5 | 67.05~67.95 | 2.5 | 2.42~2.58 | 7.3 | 3 | ±0.7 | |
| ISTW | mm | 85.7 | 70.5 | 70.05~70.95 | 2.5 | 2.42~2.58 | 7.6 | 3 | ±0.7 | |
