The 121-66204 3 7/8-4 High Speed Steel Taper Tap is a hand tap with a 7 to 10 thread chamfer. Also known as a starter tap, its longer chamfer provides a less aggressive cutting action. High Speed Steel offers good wear resistance for general-purpose applications.
This taper tap is typically used for through holes and in materials where a tap guide is necessary, including general-purpose hand tapping operations in ferrous and nonferrous materials.
- Product model: 121-66204
- Size: 3 7/8-4
- Material: High Speed Steel
- Tap type: Taper tap, also known as a starter tap
- Thread chamfer: 7 to 10 threads
- Application: Hand tapping and general-purpose use
