| 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 | 30.84 | 30.46~31.08 | 1.27 | 1.27~1.32 | 4.09 | ±0.152 | 2.03 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 32.31 | 31.93~32.56 | 1.27 | 1.27~1.32 | 4.19 | ±0.152 | 2.08 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 33.86 | 33.48~34.11 | 1.27 | 1.27~1.32 | 4.29 | ±0.152 | 2.16 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 35.23 | 34.85~35.48 | 1.27 | 1.27~1.32 | 4.39 | ±0.152 | 2.18 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 36.73 | 36.23~37.05 | 1.57 | 1.58~1.65 | 4.52 | ±0.152 | 2.26 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 38.18 | 37.67~38.50 | 1.57 | 1.58~1.65 | 4.65 | ±0.152 | 2.34 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 41.58 | 41.08~41.91 | 1.57 | 1.58~1.65 | 4.98 | ±0.152 | 2.49 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 42.55 | 42.04~42.87 | 1.57 | 1.58~1.65 | 5.05 | ±0.152 | 2.54 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 46.2 | 45.70~46.53 | 1.57 | 1.58~1.65 | 5.38 | ±0.152 | 2.69 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 46.99 | 46.49~47.32 | 1.57 | 1.58~1.65 | 5.49 | ±0.152 | 2.74 | ±0.152 | 1.98 | +0.381,-0.050 | |
| ISTW | mm | 50.62 | 49.99~51.00 | 1.98 | 1.99~2.05 | 5.82 | ±0.177 | 2.97 | ±0.177 | 3.05 | +0.381,-0.050 | |
| ISTW | mm | 58.75 | 58.12~59.13 | 1.98 | 1.99~2.05 | 6.35 | ±0.177 | 3.3 | ±0.177 | 3.05 | +0.381,-0.050 | |
| ISTW | mm | 64.59 | 63.84~65.10 | 2.36 | 2.37~2.43 | 7.11 | ±0.177 | 3.56 | ±0.177 | 3.05 | +0.381,-0.050 | |
| ISTW | mm | 67.54 | 66.78~68.04 | 2.36 | 2.37~2.43 | 7.37 | ±0.177 | 3.68 | ±0.177 | 3.05 | +0.381,-0.050 | |
| ISTW | mm | 74.17 | 73.41~74.67 | 2.36 | 2.37~2.43 | 8.03 | ±0.203 | 4.04 | ±0.203 | 3.05 | +0.381,-0.050 | |