| 扣環 | 截面 | 掛耳 | 孔徑 | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 外徑 | 公差 | 厚度 | 公差 | 最大 | 值 | 值 |
| RTW | mm | 17.3 | 17.17~17.72 | 1 | 0.94~1 | 2.1 | 3.4 | 1.7 | |
| RTW | mm | 18.3 | 18.17~18.72 | 1 | 0.94~1 | 2.2 | 3.7 | 1.7 | |
| RTW | mm | 19.5 | 19.37~19.92 | 1 | 0.94~1 | 2.2 | 3.8 | 1.7 | |
| RTW | mm | 20.5 | 20.37~20.92 | 1 | 0.94~1 | 2.3 | 3.8 | 2 | |
| RTW | mm | 21.5 | 21.37~21.92 | 1 | 0.94~1 | 2.4 | 3.9 | 2 | |
| RTW | mm | 22.5 | 22.37~22.92 | 1 | 0.94~1 | 2.4 | 4 | 2 | |
| RTW | mm | 23.5 | 23.37~23.92 | 1 | 0.94~1 | 2.6 | 4 | 2 | |
| RTW | mm | 24.6 | 24.47~25.02 | 1.2 | 1.14~1.2 | 2.6 | 4.1 | 2 | |
| RTW | mm | 25.9 | 25.69~26.32 | 1.2 | 1.14~1.2 | 2.6 | 4.2 | 2 | |
| RTW | mm | 26.9 | 26.69~27.32 | 1.2 | 1.14~1.2 | 2.8 | 4.4 | 2 | |
| RTW | mm | 28.5 | 28.29~28.92 | 1.2 | 1.14~1.2 | 2.8 | 4.4 | 2 | |
| RTW | mm | 29.1 | 28.89~29.52 | 1.2 | 1.14~1.2 | 2.9 | 4.5 | 2 | |
| RTW | mm | 30.1 | 29.85~30.6 | 1.2 | 1.14~1.2 | 3 | 4.9 | 2 | |
| RTW | mm | 32.1 | 31.85~32.6 | 1.2 | 1.14~1.2 | 3.2 | 4.9 | 2 | |
| RTW | mm | 33.4 | 33.15~33.9 | 1.2 | 1.14~1.2 | 3.2 | 5 | 2.5 | |