There are tow cases of Blender's boolean difference set

Coding Beginning Blender Code and Development
,
1

519d8d17248cbf71
519d8d17248cbf71408×556 27.9 KB

This is the shape of the thread and cylinder, and applying the difference can lead to two things.
The first will form screws, and the second will form threads.
“Please resolve this issue!”

3

This is the first case as shown in the figure:

-1e35221eb4510fc
-1e35221eb4510fc456×502 23 KB

4

This is the second case as shown in the figure:

79c56315b33fcb15
79c56315b33fcb15372×664 28.5 KB

5

Welcome :tada:…

I’m not sure what you are trying to say or maybe ask here ??
Anyway: You are aware of the (shipped with) BoltFactory addon ?