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| 項目 | 標準牌號 | 單位 | 外徑 | 公差 | 內徑 | 公差 | 厚度 |
| CSTW | mm | 28 | 27.7~28.3 | 19.8 | 19.8~19.9 | 0.4 | |
| CSTW | mm | 28.5 | 28.2~28.8 | 21.7 | 21.55~21.85 | 0.4 | |
| CSTW | inch | 0.236 | 0.229~0.244 | 0.075 | 0.073~0.076 | 0.01 | |
| CSTW | inch | 0.252 | 0.245~0.259 | 0.087 | 0.087~0.090 | 0.01 | |
| CSTW | inch | 0.315 | 0.308~0.322 | 0.11 | 0.111~0.114 | 0.01 | |
| CSTW | inch | 0.295 | 0.288~0.303 | 0.13 | 0.126~0.129 | 0.01 | |
| CSTW | inch | 0.354 | 0.347~0.362 | 0.15 | 0.150~0.153 | 0.01 | |
| CSTW | inch | 0.394 | 0.386~0.401 | 0.169 | 0.170~0.173 | 0.01 | |
| CSTW | inch | 0.394 | 0.386~0.401 | 0.189 | 0.189~0.192 | 0.01 | |
| CSTW | inch | 0.433 | 0.426~0.440 | 0.228 | 0.229~0.232 | 0.01 | |
| CSTW | inch | 0.512 | 0.504~0.519 | 0.307 | 0.308~0.311 | 0.01 | |
| CSTW | inch | 0.606 | 0.599~0.614 | 0.386 | 0.386~0.389 | 0.01 | |
| CSTW | inch | 0.701 | 0.689~0.712 | 0.465 | 0.465~0.468 | 0.016 | |
| CSTW | inch | 0.799 | 0.788~0.811 | 0.543 | 0.544~0.547 | 0.016 | |
| CSTW | inch | 0.898 | 0.886~0.909 | 0.622 | 0.623~0.625 | 0.016 | |