| 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 | 最小 | 公差 | 值 | 公差 |
| ISTW | inch | 2.543 | 2.513~2.563 | 0.093 | 0.090~0.096 | 0.28 | ±0.007 | 0.14 | ±0.007 | 0.12 | +0.015,-0.002 | |
| ISTW | inch | 2.659 | 2.629~2.679 | 0.093 | 0.090~0.096 | 0.29 | ±0.007 | 0.145 | ±0.007 | 0.12 | +0.015,-0.002 | |
| ISTW | inch | 2.92 | 2.890~2.940 | 0.093 | 0.090~0.096 | 0.316 | ±0.008 | 0.159 | ±0.008 | 0.12 | +0.015,-0.002 | |
| ISTW | inch | 3.006 | 2.976~3.026 | 0.093 | 0.090~0.096 | 0.324 | ±0.008 | 0.162 | ±0.008 | 0.12 | +0.015,-0.002 | |
| ISTW | inch | 3.237 | 3.207~3.257 | 0.109 | 0.106~0.112 | 0.345 | ±0.008 | 0.173 | ±0.008 | 0.125 | +0.015,-0.002 | |
| ISTW | inch | 3.642 | 3.612~3.662 | 0.109 | 0.106~0.112 | 0.368 | ±0.008 | 0.183 | ±0.008 | 0.125 | +0.015,-0.002 | |