BOTTOMING taps have a lead of two threads and are used when tapping blind holes. Usually preceded by a taper or intermediate tap. Alpha bottoming taps can be identified by their plain shaft, they have no rings on the shaft near the driving square.
Diameter: 25mm
Pitch: 1.5mm
Overall length: 90mm
Shaft Diameter: 18mm
Drive Square: 14.5mm
Tapping Drill Size: 23.50mm
Weight (gr) 235.00