The 121-18027 is a 1 1/4"-27 high speed steel plug tap with a GH4 4F specification. Plug taps have a 3 to 5 thread chamfer and are commonly used for threading through holes and some blind holes.
This hand tap is intended for general-purpose hand tapping operations and can be used to start a thread. High speed steel provides good wear resistance for general-purpose applications in both ferrous and nonferrous materials.
- Product model: 121-18027
- Size: 1 1/4"-27
- Tap type: Plug tap
- Material: High speed steel
- Specification: GH4 4F
- Thread chamfer: 3 to 5 threads
- Use: General-purpose hand tapping operations
