| 扣環 | 截面 | 孔徑 | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 內徑 | 公差 | 厚度 | 公差 | 最大 | 公差 | 值 |
| ISTW | inch | 1.437 | 1.402~1.452 | 0.069 | 0.067~0.068 | 0.185 | ±0.0078 | 0.079 | |
| ISTW | inch | 1.516 | 1.481~1.531 | 0.069 | 0.067~0.068 | 0.185 | ±0.0078 | 0.079 | |
| ISTW | inch | 1.634 | 1.599~1.649 | 0.069 | 0.067~0.068 | 0.185 | ±0.0078 | 0.079 | |
| ISTW | inch | 1.713 | 1.678~1.727 | 0.069 | 0.067~0.068 | 0.197 | ±0.0078 | 0.079 | |
| ISTW | inch | 1.752 | 1.717~1.767 | 0.069 | 0.067~0.068 | 0.205 | ±0.0078 | 0.079 | |
| ISTW | inch | 1.803 | 1.768~1.818 | 0.079 | 0.076~0.078 | 0.205 | ±0.0078 | 0.098 | |
| ISTW | inch | 2 | 1.957~2.018 | 0.079 | 0.076~0.078 | 0.228 | ±0.0078 | 0.098 | |
| ISTW | inch | 2.118 | 2.075~2.136 | 0.079 | 0.076~0.078 | 0.228 | ±0.0078 | 0.098 | |
| ISTW | inch | 2.197 | 2.154~2.214 | 0.079 | 0.076~0.078 | 0.228 | ±0.0078 | 0.098 | |
| ISTW | inch | 2.394 | 2.351~2.411 | 0.098 | 0.096~0.098 | 0.236 | ±0.0118 | 0.098 | |
| ISTW | inch | 2.579 | 2.536~2.596 | 0.098 | 0.096~0.098 | 0.256 | ±0.0118 | 0.098 | |
| ISTW | inch | 2.657 | 2.615~2.675 | 0.098 | 0.096~0.098 | 0.256 | ±0.0118 | 0.098 | |
| ISTW | inch | 2.776 | 2.733~2.793 | 0.098 | 0.096~0.098 | 0.256 | ±0.0118 | 0.098 | |
| ISTW | inch | 2.933 | 2.890~2.951 | 0.098 | 0.096~0.098 | 0.276 | ±0.0118 | 0.098 | |
| ISTW | inch | 3.012 | 2.969~3.029 | 0.098 | 0.096~0.098 | 0.276 | ±0.0118 | 0.098 | |