UNF 细牙螺纹
ASME B1.1
| 挤压螺纹尺寸 |
挤压螺纹预钻孔直径
|
| Ø P Gg/1" | ømm |
| 2–64 UNF | 2,00 |
| 3–56 UNF | 2,30 |
| 4–48 UNF | 2,60 |
| 5–44 UNF | 2,90 |
| 6–40 UNF | 3,20 |
| 8–36 UNF | 3,85 |
| 10–32 UNF | 4,45 |
| 12–28 UNF | 5,05 |
| 1/4–28 UNF | 5,90 |
| 5/16–24 UNF | 7,45 |
| 3/8–24 UNF | 9,00 |
| 7/16–20 UNF | 10,50 |
| 1/2–20 UNF | 12,10 |
| 9/16–18 UNF | 13,70 |
| 5/8–18 UNF | 15,25 |
| 3/4–16 UNF | 18,40 |
| 7/8–14 UNF | 21,40 |
| 1–12 UNF | 24,45 |