![[pics:title]](/static/upload/image/20230118/1674026909902347.png)
| 螺纹尺寸 | ST2.9 | ST3.5 | ST4.2 | ST4.8 | ST5.5 | ST6.3 | ||||
| d | ||||||||||
| a | 最大值 | 1.1 | 1.3 | 1.4 | 1.6 | 1.8 | 1.8 | |||
| dk | 理论值 | 最大值 | 6.3 | 8.2 | 9.4 | 10.4 | 11.5 | 12.6 | ||
| 实际值 | 最大值 | 5.5 | 7.3 | 8.4 | 9.3 | 10.3 | 11.3 | |||
| 最小值 | 5.2 | 6.9 | 8 | 8.9 | 9.9 | 10.9 | ||||
| k | 最大值 | 1.7 | 2.35 | 2.6 | 2.8 | 3 | 3.15 | |||
| r | 最大值 | 1.2 | 1.4 | 1.6 | 2 | 2.2 | 2.4 | |||
| 槽号 | 10 | 15 | 20 | 25 | 25 | 30 | ||||
| A | 参考 | 2.8 | 3.35 | 3.95 | 4.5 | 4.5 | 5.6 | |||
| t | 最大值 | 0.91 | 1.3 | 1.58 | 1.78 | 2.03 | 2.42 | |||
| 最小值 | 0.65 | 1 | 1.14 | 1.39 | 1.65 | 2.02 | ||||
| 钻削范围(板厚) | 0.7~1.9 | 0.7~2.25 | 1.75~3.0 | 1.75~4.4 | 1.75~5.25 | 2.0~6.0 | ||||
| Lg 最小值 | - | - | - | - | - | - | ||||
