1-3/8" - 12 Taper (Starting) Tap, High Speed Steel - National Fine Thread
Model #: TAT-1-3/8-12
- Thread Diameter: 1 3/8"
- Threads per Inch: 12
- High Speed Steel. Ground Thread.
- Taper Style (the style of hand tap with the most lead, for starting threads).
- Recommended Drill Size: 1-19/64"
Taper taps have a long lead (5-6 threads) for starting a thread.