# Tutorial - Unified Screw Profile for bolt in SolidWorks?

Here is the tutorial.

1. ### Step 1:

Open the attached file.

2. ### Step 2:

Right plane>>Sketch.

3. ### Step 3:

Draw a construction line coincident with the helix end point.

4. ### Step 4:

Draw another construction line and make them equal.

5. ### Step 5:

Smart Dimension it to 1.99mm.

6. ### Step 6:

Make a horizontal center line.

7. ### Step 7:

Draw a circle on this center line.

8. ### Step 8:

Two circles with equal dia.

9. ### Step 9:

Select all circles and make them equal.

10. ### Step 10:

Click Line tool.

11. ### Step 11:

Now keep the mouse over the circle till the quadrant points are visible and then click on the circle.

12. ### Step 12:

Now click on the other circle with tangent relation.

13. ### Step 13:

Repeat the same step.

14. ### Step 14:

Now Smart dimension and select the center line.

And origin.

16. ### Step 16:

Dimension be 10mm.

Point tool.

18. ### Step 18:

On the quadrant point to the left of the circle.

19. ### Step 19:

Dimension b/w this point to the origin.

21. ### Step 21:

Now select the center of circle and the centerline end point and add horizontal relation.

22. ### Step 22:

Same with lower circle.

Line tool.

23. ### Step 23:

Draw a line over center line.

24. ### Step 24:

Trim tool and trim circle.

25. ### Step 25:

Same step for other circle too.

26. ### Step 26:

Exit the sketch.

Swept cut.

28. ### Step 28:

Select the sketch as profile and helix as path.

29. ### Step 29:

Click OK and we have thread.