| 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 | inch | 2.3 | 0.83 | 0.823~0.837 | 0.042 | 0.040~0.044 | 0.112 | ±0.005 | |
| CTW | inch | 2.7 | 0.887 | 0.880~0.894 | 0.042 | 0.040~0.044 | 0.12 | ±0.005 | |
| CTW | inch | 4 | 0.997 | 0.989~1.005 | 0.05 | 0.048~0.052 | 0.135 | ±0.007 | |
| CTW | inch | 5.1 | 1.11 | 1.102~1.118 | 0.05 | 0.048~0.052 | 0.15 | ±0.007 | |
| CTW | inch | 6.1 | 1.22 | 1.212~1.228 | 0.05 | 0.048~0.052 | 0.165 | ±0.007 | |
| CTW | inch | 7.6 | 1.331 | 1.323~1.339 | 0.05 | 0.048~0.052 | 0.18 | ±0.007 | |
| CTW | inch | 11 | 1.463 | 1.453~1.473 | 0.062 | 0.059~0.065 | 0.195 | ±0.007 | |
| CTW | inch | 12.9 | 1.555 | 1.545~1.565 | 0.062 | 0.059~0.065 | 0.21 | ±0.007 | |
| CTW | inch | 16.2 | 1.777 | 1.767~1.787 | 0.062 | 0.059~0.065 | 0.24 | ±0.007 | |