| 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 | 公差 | 最小 | 公差 | 值 | 值 | 公差 |
| RTW | mm | 249.68 | 247.40~251.96 | 4.75 | 4.63~4.87 | 15.47 | ±0.254 | 7.47 | ±0.254 | 16.76 | 4.75 | +0.508,-0.127 | |
| RTW | mm | 256.59 | 254.31~258.87 | 4.75 | 4.63~4.87 | 15.88 | ±0.254 | 7.59 | ±0.254 | 16.76 | 4.75 | +0.508,-0.127 | |
| RTW | mm | 263.53 | 261.24~265.81 | 4.75 | 4.63~4.87 | 16.31 | ±0.254 | 7.72 | ±0.254 | 18.67 | 4.75 | +0.508,-0.127 | |
| RTW | mm | 270.46 | 268.18~272.74 | 4.75 | 4.63~4.87 | 16.71 | ±0.254 | 7.85 | ±0.254 | 18.67 | 4.75 | +0.508,-0.127 | |
| RTW | mm | 277.37 | 275.09~279.65 | 4.75 | 4.63~4.87 | 17.15 | ±0.254 | 8 | ±0.254 | 18.67 | 4.75 | +0.508,-0.127 | |
| RTW | inch | 0.28 | 0.275~0.290 | 0.015 | 0.013~0.017 | 0.025 | ±0.002 | 0.015 | ±0.002 | 0.065 | 0.031 | +0.010,-0.002 | |
| RTW | inch | 0.346 | 0.341~0.356 | 0.015 | 0.013~0.017 | 0.033 | ±0.002 | 0.018 | ±0.002 | 0.066 | 0.031 | +0.010,-0.002 | |
| RTW | inch | 0.415 | 0.410~0.425 | 0.025 | 0.023~0.027 | 0.04 | ±0.003 | 0.028 | ±0.003 | 0.082 | 0.041 | +0.010,-0.002 | |
| RTW | inch | 0.482 | 0.477~0.492 | 0.025 | 0.023~0.027 | 0.049 | ±0.003 | 0.029 | ±0.003 | 0.098 | 0.041 | +0.010,-0.002 | |
| RTW | inch | 0.498 | 0.493~0.508 | 0.025 | 0.023~0.027 | 0.05 | ±0.003 | 0.03 | ±0.003 | 0.098 | 0.047 | +0.010,-0.002 | |
| RTW | inch | 0.548 | 0.543~0.558 | 0.035 | 0.033~0.037 | 0.053 | ±0.004 | 0.035 | ±0.004 | 0.114 | 0.047 | +0.010,-0.002 | |
| RTW | inch | 0.56 | 0.555~0.570 | 0.035 | 0.033~0.037 | 0.053 | ±0.004 | 0.035 | ±0.004 | 0.114 | 0.047 | +0.010,-0.002 | |
| RTW | inch | 0.62 | 0.615~0.630 | 0.035 | 0.033~0.037 | 0.053 | ±0.004 | 0.035 | ±0.004 | 0.132 | 0.047 | +0.010,-0.002 | |
| RTW | inch | 0.694 | 0.689~0.704 | 0.035 | 0.033~0.037 | 0.06 | ±0.004 | 0.035 | ±0.004 | 0.132 | 0.062 | +0.010,-0.002 | |
| RTW | inch | 0.763 | 0.758~0.773 | 0.035 | 0.033~0.037 | 0.063 | ±0.004 | 0.036 | ±0.004 | 0.132 | 0.062 | +0.010,-0.002 | |