螺紋 / 套筒
量測螺紋外徑和牙距；依頭部對邊尺寸選擇套筒。
| 套筒 · 尺寸 | 說明 |
|---|---|
| 5/32 in. | — |
| 3/16 in. | — |
| 7/32 in. | — |
| 1/4 in. | — |
| 9/32 in. | — |
| 5/16 in. | — |
| 11/32 in. | — |
| 3/8 in. | 3/8 in. |
| 7/16 in. | 1/4 in. |
| 1/2 in. | 5/16 in. |
| 9/16 in. | 3/8 in. |
| 5/8 in. | 7/16 in. |
| 11/16 in. | 11/16 in. |
| 3/4 in. | 1/2 in. |
| 13/16 in. | 9/16 in. |
| 7/8 in. | 7/8 in. |
| 15/16 in. | 5/8 in. |
| 1 in. | 1 in. |
| 1-1/16 in. | 1-1/16 in. |
| 1-1/8 in. | 3/4 in. |
| 1-3/16 in. | 1-3/16 in. |
| 1-1/4 in. | 1-1/4 in. |
| 1-5/16 in. | 7/8 in. |
| 1-3/8 in. | 1-3/8 in. |
| 1-7/16 in. | 1-7/16 in. |
| 1-1/2 in. | 1 in. |
螺紋 / 套筒
六角套筒通常較貼合六角頭；十二角套筒較容易定位。避免使用過鬆的工具。
資料僅供工坊參考。標準、公差、材質和工具可能不同，請依製造商規範。