| 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 | 0.618 | 0.604~0.622 | 0.039 | 0.038~0.039 | 0.094 | ±0.0039 | 0.051 | |
| ISTW | inch | 0.65 | 0.636~0.653 | 0.047 | 0.045~0.047 | 0.102 | ±0.0039 | 0.059 | |
| ISTW | inch | 0.728 | 0.712~0.733 | 0.047 | 0.045~0.047 | 0.11 | ±0.0039 | 0.059 | |
| ISTW | inch | 0.762 | 0.746~0.766 | 0.047 | 0.045~0.047 | 0.11 | ±0.0039 | 0.059 | |
| ISTW | inch | 0.807 | 0.791~0.812 | 0.047 | 0.045~0.047 | 0.118 | ±0.0039 | 0.059 | |
| ISTW | inch | 0.846 | 0.830~0.851 | 0.047 | 0.045~0.047 | 0.122 | ±0.0039 | 0.059 | |
| ISTW | inch | 0.874 | 0.858~0.882 | 0.047 | 0.045~0.047 | 0.126 | ±0.0039 | 0.059 | |
| ISTW | inch | 0.913 | 0.897~0.921 | 0.047 | 0.045~0.047 | 0.134 | ±0.0039 | 0.059 | |
| ISTW | inch | 0.953 | 0.937~0.961 | 0.047 | 0.045~0.047 | 0.138 | ±0.0039 | 0.059 | |
| ISTW | inch | 1.02 | 1.004~1.027 | 0.059 | 0.057~0.059 | 0.15 | ±0.0039 | 0.079 | |
| ISTW | inch | 1.098 | 1.082~1.106 | 0.059 | 0.057~0.059 | 0.154 | ±0.0039 | 0.079 | |
| ISTW | inch | 1.165 | 1.149~1.173 | 0.059 | 0.057~0.059 | 0.157 | ±0.0039 | 0.079 | |
| ISTW | inch | 1.24 | 1.221~1.250 | 0.059 | 0.057~0.059 | 0.138 | ±0.0039 | 0.079 | |
| ISTW | inch | 1.268 | 1.249~1.277 | 0.059 | 0.057~0.059 | 0.165 | ±0.0039 | 0.079 | |
| ISTW | inch | 1.358 | 1.339~1.368 | 0.069 | 0.067~0.068 | 0.177 | ±0.0039 | 0.079 | |