TAPER taps have a lead of eight threads and are used as a starting tap in difficult or high precision holes. Alpha Taper taps can be identified by the single ring on the shaft near the driving square.
- Diameter: 9/16mm
- Pitch: 18mm
- Overall length: 70mm
- Shaft Diameter: 11mm
- Drive Square: 9mm
- Tapping Drill Size: 12.90mm