| 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 | 252 | 251.19~253.62 | 5 | 4.85~5.15 | 14 | 4 | ||
| RTW | mm | 262 | 261.19~263.62 | 5 | 4.85~5.15 | 14 | 4 | ||
| RTW | mm | 275 | 274.19~276.62 | 5 | 4.85~5.15 | 16 | 4 | ||
| RTW | mm | 285 | 284.19~286.62 | 5 | 4.85~5.15 | 16 | 4 | ||
| RTW | mm | 295 | 294.19~296.62 | 5 | 4.85~5.15 | 16 | 4 | ||
| RTW | mm | 305 | 304.19~306.62 | 5 | 4.85~5.15 | 16 | 4 | ||
| RTW | mm | 315 | 314.19~316.62 | 5 | 4.85~5.15 | 16 | 4 | ||
| RTW | inch | 0.264 | 0.257~0.270 | 0.016 | 0.015~0.016 | 0.028 | 0.063 | 0.031 | |
| RTW | inch | 0.303 | 0.297~0.310 | 0.016 | 0.015~0.016 | 0.031 | 0.067 | 0.031 | |
| RTW | inch | 0.346 | 0.340~0.353 | 0.016 | 0.015~0.016 | 0.035 | 0.067 | 0.031 | |
| RTW | inch | 0.386 | 0.379~0.392 | 0.024 | 0.023~0.025 | 0.043 | 0.087 | 0.031 | |
| RTW | inch | 0.421 | 0.415~0.428 | 0.039 | 0.038~0.041 | 0.059 | 0.11 | 0.047 | |
| RTW | inch | 0.465 | 0.458~0.471 | 0.039 | 0.038~0.041 | 0.059 | 0.118 | 0.047 | |
| RTW | inch | 0.512 | 0.505~0.518 | 0.039 | 0.038~0.041 | 0.067 | 0.122 | 0.059 | |
| RTW | inch | 0.555 | 0.549~0.562 | 0.039 | 0.038~0.041 | 0.067 | 0.122 | 0.059 | |