| 扣環 | ||||||
|---|---|---|---|---|---|---|
| 項目 | 標準牌號 | 單位 | 內徑 | 公差 | 厚度 | 公差 |
| CRTW | inch | 0.813 | 0.803~0.823 | 0.015 | 0.013~0.017 | |
| CRTW | inch | 0.938 | 0.928~0.948 | 0.015 | 0.013~0.017 | |
| CRTW | inch | 1.117 | 1.107~1.127 | 0.015 | 0.013~0.017 | |
| CRTW | inch | 1.188 | 1.178~1.198 | 0.015 | 0.013~0.017 | |
| CRTW | inch | 1.438 | 1.428~1.448 | 0.015 | 0.013~0.017 | |
| CRTW | inch | 1.6 | 1.590~1.610 | 0.015 | 0.013~0.017 | |