#4 - 40 Plug Tap, High Speed Steel - National Coarse Thread
Model #: TAP-4-40
- Thread Diameter: #4
- Threads per Inch: 40
- High Speed Steel. Ground Thread.
- Plug taps are the most popular hand tap, with a chamfer in between Taper Taps and Bottoming Taps.
- Recommended Drill Size: #43
Can be used in a machine as well as by hand, but it does not drive the chips ahead like a Spiral Point Tap.