Irwin 1791137 High Carbon Steel Bottom Tap, 1/4"-20 NC
Description
Highlights:
- Size: 1/4" - 20 NC
- Use with no. 7 drill bit
- 1 to 2 threads chamfered
- Ideal for threading close to the bottom of blind holes
- High carbon steel material
- For hand tapping applications
- Chip breaking technology cuts chips easier
- Tap size and recommended drill bit size are laser etched on each tap
- Taps produce a class 2B thread
- Carded