- Joined
- Mar 26, 2018
- Messages
- 2,724
I need to tap a 1/4-20 hole roughly 2 inches deep for a slightly odd part. All of my 1/4-20 taps (spiral flute, spiral point, straight, etc.) are all threaded roughly 1.25" long. Where can I buy a tap with extra long flutes? What are they called?