| 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 | inch | 2.724 | 2.707~2.767 | 0.098 | 0.096~0.098 | 0.224 | ±0.0078 | 0.098 | |
| IRTW | inch | 2.815 | 2.797~2.858 | 0.098 | 0.096~0.098 | 0.224 | ±0.0118 | 0.098 | |
| IRTW | inch | 2.854 | 2.837~2.897 | 0.098 | 0.096~0.098 | 0.224 | ±0.0118 | 0.098 | |
| IRTW | inch | 3.012 | 2.994~3.055 | 0.098 | 0.096~0.098 | 0.236 | ±0.0118 | 0.098 | |
| IRTW | inch | 3.366 | 3.345~3.417 | 0.098 | 0.096~0.098 | 0.236 | ±0.0118 | 0.098 | |
| IRTW | inch | 3.563 | 3.542~3.614 | 0.118 | 0.115~0.118 | 0.26 | ±0.0118 | 0.118 | |
| IRTW | inch | 3.76 | 3.739~3.811 | 0.118 | 0.115~0.118 | 0.26 | ±0.0118 | 0.118 | |
| IRTW | inch | 3.957 | 3.936~4.007 | 0.118 | 0.115~0.118 | 0.291 | ±0.0118 | 0.118 | |
| IRTW | inch | 4.154 | 4.133~4.204 | 0.118 | 0.115~0.118 | 0.291 | ±0.0118 | 0.118 | |