| 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 | 1.398 | 1.098 | 1.091~1.106 | 0.059 | 0.057~0.061 | 0.146 | 0.071 | ±0.0157 | |
| ISTW | inch | 1.472 | 1.165 | 1.158~1.173 | 0.059 | 0.057~0.061 | 0.154 | 0.071 | ±0.0157 | |
| ISTW | inch | 1.563 | 1.24 | 1.231~1.250 | 0.059 | 0.057~0.061 | 0.161 | 0.071 | ±0.0157 | |
| ISTW | inch | 1.598 | 1.268 | 1.258~1.277 | 0.059 | 0.057~0.061 | 0.165 | 0.071 | ±0.0157 | |
| ISTW | inch | 1.638 | 1.307 | 1.298~1.316 | 0.069 | 0.067~0.071 | 0.165 | 0.079 | ±0.0157 | |
| ISTW | inch | 1.732 | 1.386 | 1.376~1.395 | 0.069 | 0.067~0.071 | 0.173 | 0.079 | ±0.0157 | |
| ISTW | inch | 1.819 | 1.457 | 1.441~1.472 | 0.069 | 0.067~0.071 | 0.181 | 0.079 | ±0.0157 | |
| ISTW | inch | 1.894 | 1.516 | 1.500~1.531 | 0.069 | 0.067~0.071 | 0.189 | 0.079 | ±0.0196 | |
| ISTW | inch | 2.02 | 1.634 | 1.619~1.649 | 0.069 | 0.067~0.071 | 0.193 | 0.079 | ±0.0196 | |
| ISTW | inch | 2.169 | 1.752 | 1.737~1.767 | 0.069 | 0.067~0.071 | 0.209 | 0.079 | ±0.0196 | |
| ISTW | inch | 2.236 | 1.803 | 1.788~1.818 | 0.079 | 0.076~0.081 | 0.217 | 0.098 | ±0.0196 | |
| ISTW | inch | 2.323 | 1.882 | 1.867~1.897 | 0.079 | 0.076~0.081 | 0.22 | 0.098 | ±0.0196 | |
| ISTW | inch | 2.465 | 2 | 1.983~2.017 | 0.079 | 0.076~0.081 | 0.232 | 0.098 | ±0.0196 | |
| ISTW | inch | 2.512 | 2.039 | 2.022~2.057 | 0.079 | 0.076~0.081 | 0.236 | 0.098 | ±0.0196 | |
| ISTW | inch | 2.598 | 2.118 | 2.101~2.135 | 0.079 | 0.076~0.081 | 0.24 | 0.098 | ±0.0196 | |