The 2319210B 5/16-18 HSS BSW/BSF British thread hand tap is a bottom tap from Pittsburg, designed for producing internal British thread forms by hand.
Bottom hand taps are typically used to extend or finish internal threads, including threads toward the bottom of a blind hole, where a bottom-style tap is appropriate.
- Model: 2319210B
- Size: 5/16-18
- Material: HSS
- Thread: BSW/BSF British thread, 55% Whitworth
- Tap type: Hand tap, bottom
- Brand: Pittsburg
