Alpha HSS Tap UNF Bottoming 1/4x28 UNFHB14 07/04/2024 T30 x 37 x 166mm
Alpha HSS Tap UNF Bottoming 1/4x28 UNFHB14 07/04/2024 T30 x 37 x 166mm1 4x28 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: 1 4mm Pitch: 28mm Overall length: 50mm Shaft Diameter: 6mm Drive Square: 4. 9mm Tapping Drill Size: 5. 50mm Weight (gr) 15. 00
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