Bolt design has been introduced in AUTOCAD 2010 program as a result of some operations as seen below.
We draw a hexagon into an apartment.
Then we turn it into a solid.
We do the necessary operations on the model.
We are circling the bottom surface of our model.
After this process, we convert the model to solid.
We are spiraling to a point on the area where our model is.
We make the spiral that we draw on the appropriate scale solid.
And as a final step we place our spiral on our model.