| 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 | mm | 8 | 5.6 | 5.4~5.7 | 0.5 | 0.47~0.53 | 1.2 | 2.2 | ±0.2 | |
| ISTW | mm | 9.3 | 6.5 | 6.3~6.6 | 0.6 | 0.56~0.64 | 1.4 | 2.6 | ±0.2 | |
| ISTW | mm | 10.6 | 7.4 | 7.2~7.5 | 0.7 | 0.66~0.74 | 1.6 | 3 | ±0.2 | |
| ISTW | mm | 12 | 8.4 | 8.2~8.5 | 0.8 | 0.76~0.84 | 1.8 | 3.4 | ±0.2 | |
| ISTW | mm | 13.3 | 9.3 | 9.15~9.45 | 1 | 0.95~1.05 | 2 | 1.2 | ±0.3 | |
| ISTW | mm | 14.4 | 10.2 | 10.05~10.35 | 1 | 0.95~1.05 | 2.1 | 1.2 | ±0.3 | |
| ISTW | mm | 15.5 | 11.1 | 10.92~11.28 | 1 | 0.95~1.05 | 2.2 | 1.2 | ±0.3 | |
| ISTW | mm | 16.6 | 12 | 11.82~12.18 | 1 | 0.95~1.05 | 2.3 | 1.2 | ±0.3 | |
| ISTW | mm | 17.5 | 12.9 | 12.72~13.08 | 1 | 0.95~1.05 | 2.3 | 1.2 | ±0.3 | |
| ISTW | mm | 18.6 | 13.8 | 13.62~13.98 | 1 | 0.95~1.05 | 2.4 | 1.2 | ±0.3 | |
| ISTW | mm | 19.7 | 14.7 | 14.52~14.88 | 1 | 0.95~1.05 | 2.5 | 1.2 | ±0.3 | |
| ISTW | mm | 20.9 | 15.7 | 15.52~15.88 | 1 | 0.95~1.05 | 2.6 | 1.2 | ±0.3 | |
| ISTW | mm | 21.9 | 16.5 | 16.32~16.68 | 1.2 | 1.14~1.26 | 2.7 | 1.5 | ±0.3 | |
| ISTW | mm | 23.1 | 17.5 | 17.32~17.68 | 1.2 | 1.14~1.26 | 2.8 | 1.5 | ±0.3 | |
| ISTW | mm | 24.3 | 18.5 | 18.3~18.7 | 1.2 | 1.14~1.26 | 2.9 | 1.5 | ±0.3 | |
