1. Taps Dies Thread cutting
Threading operations
Taps
Dies
Thread cutting

2. External thread
Internal thread

3. Pitch
The distance from a point on a screw thread to a corresponding point on the next thread.
Pitch = 1.0/threads per inch

4. Threads Fits
Threads are classified by the accuracy of form and fit compared to a theoreticly perfect thread.
Application dictates thread class requirements

5. General anatomy of threads
Pg 91 ST

6. Different forms
Acme
Buttress
Square
Taper

7. Tap- threaded tool with external flutes
Die- Internally threaded tool

8. Tap types
Taper
Plug
Bottom

9. Thread cutting on Lathe
External
Internal

10. Tonights operation Debur Material Drill tap hole on mill
Tap using tap chuck and guide bushing