# How to model Bolt with terminating thread in SolidWorks?

Here is the tutorial.

1. ### Step 1:

Top plane>>Sketch.

2. ### Step 2:

Circle of 20mm dia.

3. ### Step 3:

Extrude it by 100mm.

4. ### Step 4:

Top face>>Sketch.

5. ### Step 5:

Draw a polygon of 32.5mm circle.

6. ### Step 6:

Extrude it by 10mm.

7. ### Step 7:

Top face>>Sketch.

8. ### Step 8:

Draw a circle of 32.5mm dia or tangent to the side of polygon.

9. ### Step 9:

Extrude cut it by flip side to cut at 60º draft.

10. ### Step 10:

Same cut with lower side of polygon.

11. ### Step 11:

Chamfer the bottom edge by 2mm.

12. ### Step 12:

Top plane>>Sketch.

13. ### Step 13:

Select the outer edge and then convert entities.

14. ### Step 14:

Make a helix defined by Height and Pitch with height=80mm, pitch=2mm Clockwise.

15. ### Step 15:

Reference Geometry>>Plane.

16. ### Step 16:

Offset the top plane by 80mm or by coincident to the helix end point.

17. ### Step 17:

Plane1>>Sketch.

18. ### Step 18:

Convert the sketch5 under previous helix.

19. ### Step 19:

Create a helix with height=10mm, pitch=2mm clockwise at taper helix 30º outward.

20. ### Step 20:

Right plane>>Sketch.

21. ### Step 21:

Draw a triangle using polygon tool.

22. ### Step 22:

Sweep cut the triangle about helix1.

23. ### Step 23:

Select the end face of the sweep cut and then sketch.

24. ### Step 24:

While selecting the face click convert entities.

25. ### Step 25:

Sweep cut that sketch about helix2.

26. ### Step 26:

And we have terminating threads.

27. ### Step 27:

Rendered Image.