The 121-18020 is a 1 1/4"-20 high speed steel plug tap with GH4 6F specification. Plug taps have a 3 to 5 thread chamfer and are commonly used for through holes and some blind holes.
This hand tap is intended for starting threads and for general-purpose hand tapping operations in ferrous and nonferrous materials.
- Model: 121-18020
- Size: 1 1/4"-20
- Type: Plug tap
- Material: High Speed Steel
- Specification: GH4 6F
- Thread chamfer: 3 to 5 threads
- Application: General-purpose hand tapping
