Alpha HSS Tap MC Bottoming-8x1.25 MCHB080BOTTOMING 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: 8mm Pitch: 1. 25mm Overall length: 56mm Shaft Diameter: 6mm Drive Square: 4. 9mm Tapping Drill Size: 6. 80mm Weight (gr) 25. 00
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