The 421-28812 1 3/8-12 C.S. Hand Tap Bottom is a carbon steel bottom hand tap for producing internal 1 3/8-12 threads. Its bottom-tap style is intended for continuing threads toward the bottom of a blind hole after initial thread formation.
This tap is typically used for general manual threading and thread completion in prepared holes where a 1 3/8-12 internal thread is required.
- Model: 421-28812
- Size: 1 3/8-12
- Material: Carbon steel (C.S.)
- Type: Hand tap
- Style: Bottom
