| 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 | inch | 1.606 | 1.597~1.616 | 1.276 | 0.059 | 0.057~0.061 | 0.165 | 0.063 | ±0.016 | |
| IRTW | inch | 1.713 | 1.697~1.728 | 1.366 | 0.069 | 0.067~0.071 | 0.173 | 0.079 | ±0.016 | |
| IRTW | inch | 1.791 | 1.776~1.807 | 1.429 | 0.069 | 0.067~0.071 | 0.181 | 0.079 | ±0.020 | |
| IRTW | inch | 1.909 | 1.894~1.925 | 1.531 | 0.069 | 0.067~0.071 | 0.189 | 0.079 | ±0.020 | |
| IRTW | inch | 1.988 | 1.971~2.005 | 1.602 | 0.069 | 0.067~0.071 | 0.193 | 0.079 | ±0.020 | |
| IRTW | inch | 2.028 | 2.010~2.045 | 1.634 | 0.069 | 0.067~0.071 | 0.197 | 0.079 | ±0.020 | |
| IRTW | inch | 2.134 | 2.117~2.151 | 1.732 | 0.079 | 0.076~0.081 | 0.201 | 0.087 | ±0.020 | |
| IRTW | inch | 2.213 | 2.195~2.230 | 1.803 | 0.079 | 0.076~0.081 | 0.205 | 0.087 | ±0.020 | |
| IRTW | inch | 2.331 | 2.313~2.348 | 1.89 | 0.079 | 0.076~0.081 | 0.22 | 0.087 | ±0.020 | |
| IRTW | inch | 2.37 | 2.353~2.387 | 1.921 | 0.079 | 0.076~0.081 | 0.224 | 0.098 | ±0.020 | |
| IRTW | inch | 2.449 | 2.432~2.466 | 1.984 | 0.079 | 0.076~0.081 | 0.232 | 0.098 | ±0.020 | |
| IRTW | inch | 2.528 | 2.510~2.545 | 2.047 | 0.079 | 0.076~0.081 | 0.24 | 0.098 | ±0.020 | |
| IRTW | inch | 2.606 | 2.589~2.624 | 2.11 | 0.079 | 0.076~0.081 | 0.248 | 0.11 | ±0.020 | |
| IRTW | inch | 2.646 | 2.628~2.663 | 2.142 | 0.079 | 0.076~0.081 | 0.252 | 0.11 | ±0.020 | |
| IRTW | inch | 2.724 | 2.707~2.742 | 2.197 | 0.098 | 0.096~0.101 | 0.264 | 0.126 | ±0.020 | |