| 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 | inch | 0.654 | 0.472 | 0.466~0.479 | 0.039 | 0.038~0.041 | 0.091 | 0.047 | ±0.0118 | |
| ISTW | inch | 0.689 | 0.508 | 0.501~0.514 | 0.039 | 0.038~0.041 | 0.091 | 0.047 | ±0.0118 | |
| ISTW | inch | 0.732 | 0.543 | 0.537~0.550 | 0.039 | 0.038~0.041 | 0.094 | 0.047 | ±0.0118 | |
| ISTW | inch | 0.776 | 0.579 | 0.572~0.585 | 0.039 | 0.038~0.041 | 0.098 | 0.047 | ±0.0118 | |
| ISTW | inch | 0.823 | 0.618 | 0.612~0.625 | 0.039 | 0.038~0.041 | 0.102 | 0.047 | ±0.0118 | |
| ISTW | inch | 0.862 | 0.65 | 0.643~0.656 | 0.047 | 0.045~0.049 | 0.106 | 0.059 | ±0.0118 | |
| ISTW | inch | 0.909 | 0.689 | 0.682~0.696 | 0.047 | 0.045~0.049 | 0.11 | 0.059 | ±0.0118 | |
| ISTW | inch | 0.957 | 0.728 | 0.721~0.736 | 0.047 | 0.045~0.049 | 0.114 | 0.059 | ±0.0118 | |
| ISTW | inch | 1.004 | 0.768 | 0.760~0.775 | 0.047 | 0.045~0.049 | 0.118 | 0.059 | ±0.0157 | |
| ISTW | inch | 1.043 | 0.807 | 0.800~0.814 | 0.047 | 0.045~0.049 | 0.118 | 0.059 | ±0.0157 | |
| ISTW | inch | 1.126 | 0.874 | 0.867~0.881 | 0.047 | 0.045~0.049 | 0.126 | 0.059 | ±0.0157 | |
| ISTW | inch | 1.173 | 0.913 | 0.906~0.921 | 0.047 | 0.045~0.049 | 0.13 | 0.059 | ±0.0157 | |
| ISTW | inch | 1.22 | 0.953 | 0.945~0.960 | 0.047 | 0.045~0.049 | 0.134 | 0.059 | ±0.0157 | |
| ISTW | inch | 1.303 | 1.02 | 1.012~1.027 | 0.059 | 0.057~0.061 | 0.142 | 0.071 | ±0.0157 | |
| ISTW | inch | 1.343 | 1.059 | 1.052~1.066 | 0.059 | 0.057~0.061 | 0.142 | 0.071 | ±0.0157 | |