| 扣環 | 截面 | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 內徑 | 公差 | 厚度 | 公差 | 最大 | 公差 |
| CTW | mm | 38.1 | 16.89 | 16.72~17.06 | 1.07 | 1.02~1.11 | 2.29 | ±0.127 | |
| CTW | mm | 43.18 | 18.31 | 18.14~18.49 | 1.07 | 1.02~1.11 | 2.46 | ±0.127 | |
| CTW | mm | 50.8 | 19.74 | 19.56~19.91 | 1.07 | 1.02~1.11 | 2.67 | ±0.127 | |
| CTW | mm | 58.42 | 21.08 | 20.91~21.25 | 1.07 | 1.02~1.11 | 2.84 | ±0.127 | |
| CTW | mm | 68.58 | 22.53 | 22.36~22.70 | 1.07 | 1.02~1.11 | 3.05 | ±0.127 | |
| CTW | mm | 101.6 | 25.32 | 25.13~25.52 | 1.27 | 1.22~1.32 | 3.43 | ±0.177 | |
| CTW | mm | 129.54 | 28.19 | 28.00~28.39 | 1.27 | 1.22~1.32 | 3.81 | ±0.177 | |
| CTW | mm | 154.94 | 30.99 | 30.79~31.19 | 1.27 | 1.22~1.32 | 4.19 | ±0.177 | |
| CTW | mm | 193.04 | 33.81 | 33.61~34.01 | 1.27 | 1.22~1.32 | 4.57 | ±0.177 | |
| CTW | mm | 279.4 | 37.16 | 36.91~37.41 | 1.57 | 1.50~1.65 | 4.95 | ±0.177 | |
| CTW | mm | 327.66 | 39.5 | 39.25~39.75 | 1.57 | 1.50~1.65 | 5.33 | ±0.177 | |
| CTW | mm | 411.48 | 45.14 | 44.89~45.38 | 1.57 | 1.50~1.65 | 6.1 | ±0.177 | |
| CTW | inch | 0.03 | 0.102 | 0.098~0.104 | 0.015 | 0.013~0.017 | 0.031 | ±0.003 | |
| CTW | inch | 0.052 | 0.131 | 0.127~0.133 | 0.015 | 0.013~0.017 | 0.037 | ±0.003 | |
| CTW | inch | 0.062 | 0.161 | 0.157~0.163 | 0.015 | 0.013~0.017 | 0.042 | ±0.003 | |