| 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 | mm | 11.71 | 11.46~11.83 | 0.89 | 0.89~0.93 | 2.03 | ±0.101 | 1.04 | ±0.101 | 1.07 | +0.254,-0.050 | |
| ISTW | mm | 13.23 | 12.98~13.36 | 0.89 | 0.89~0.93 | 2.24 | ±0.101 | 1.09 | ±0.101 | 1.07 | +0.254,-0.050 | |
| ISTW | mm | 13.97 | 13.72~14.09 | 0.89 | 0.89~0.93 | 2.34 | ±0.101 | 1.17 | ±0.101 | 1.07 | +0.254,-0.050 | |
| ISTW | mm | 14.71 | 14.46~14.83 | 0.89 | 0.89~0.93 | 2.44 | ±0.101 | 1.22 | ±0.101 | 1.07 | +0.254,-0.050 | |
| ISTW | mm | 16.13 | 15.88~16.25 | 1.07 | 1.07~1.11 | 2.64 | ±0.127 | 1.32 | ±0.127 | 1.07 | +0.254,-0.050 | |
| ISTW | mm | 17.6 | 17.35~17.72 | 1.07 | 1.07~1.11 | 2.84 | ±0.127 | 1.42 | ±0.127 | 1.07 | +0.254,-0.050 | |
| ISTW | mm | 18.34 | 18.09~18.46 | 1.07 | 1.07~1.11 | 2.95 | ±0.127 | 1.45 | ±0.127 | 1.07 | +0.254,-0.050 | |
| ISTW | mm | 19.08 | 18.83~19.20 | 1.07 | 1.07~1.11 | 3.05 | ±0.127 | 1.52 | ±0.127 | 1.27 | +0.254,-0.050 | |
| ISTW | mm | 20.57 | 20.32~20.70 | 1.07 | 1.07~1.11 | 3.25 | ±0.127 | 1.63 | ±0.127 | 1.27 | +0.254,-0.050 | |
| ISTW | mm | 22.02 | 21.77~22.14 | 1.07 | 1.07~1.11 | 3.45 | ±0.127 | 1.73 | ±0.127 | 1.27 | +0.254,-0.050 | |
| ISTW | mm | 23.5 | 23.25~23.62 | 1.07 | 1.07~1.11 | 3.66 | ±0.127 | 1.83 | ±0.127 | 1.27 | +0.254,-0.050 | |
| ISTW | mm | 24.94 | 24.57~25.19 | 1.27 | 1.27~1.32 | 3.73 | ±0.152 | 1.85 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 26.44 | 26.07~26.69 | 1.27 | 1.27~1.32 | 3.81 | ±0.152 | 1.91 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 27.89 | 27.51~28.14 | 1.27 | 1.27~1.32 | 3.89 | ±0.152 | 1.93 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 29.36 | 28.99~29.61 | 1.27 | 1.27~1.32 | 3.99 | ±0.152 | 2.01 | ±0.152 | 1.98 | +0.381,-0.050 | |