small tutorial1. Step 1use hole command in part design

2. Step 2make a hole with thread, every standard is predefined

3. Step 3compare! hole with NO thread.

4. Step 4you can see the difference HEREhole.1 threadhole.2 no thread

rakeshalmost 2 years agoHere is steps to create M8 shaft.1. Step 1Create a shaft definition as shown

2. Step 2Create a Point definition as shown

3. Step 3Create a Axis definition as shown

4. Step 4Go to Wire frame & Surface design

5. Step 5Create Helical curve.

6. Step 6Create a Helix curve definition as shown

7. Step 7Switch back to Part design.

8. Step 8Create a slot definition and sketch profile.

9. Step 9Sketch as shown

10. Step 10Select helix as center curve.In profile control, check pulling direction & select axis.

11. Step 11Finish the part to match the illustration shown.

Modeling a bolt with visible threads in Catia V5.1. Step 11

2. Step 22

3. Step 33

4. Step 44

5. Step 55

6. Step 66

7. Step 77

8. Step 88

9. Step 99

10. Step 1010

11. Step 1111

12. Step 1212

13. Step 1313

14. Step 1414. You may use other profiles as well instead of circular to make other type of threads like v thread, acme thread etc.