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DESCRIPTION
External thread Internal thread
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Threading operations
TapsDies
Thread cutting
External thread Internal thread
Pitch
The distance from a point on a screw thread to a corresponding point on the next thread.
Pitch = 1.0/threads per inch
Threads Fits
Threads are classified by the accuracy of form and fit compared to a theoreticly perfect thread.
Application dictates thread class requirements
General anatomy of threads
Pg 91 ST
Different forms
Acme Buttress
Taper Square
Tap- threaded tool with external flutes
Die- Internally threaded tool
Tap types
Taper Plug Bottom
Thread cutting on Lathe
External Internal
Tonights operation
Debur Material Drill tap hole on mill Tap using tap chuck and guide bushing
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