HSS Tap UNF Bottoming-1/2x20 UNFHB12

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  • Regular price $50.64
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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: 1/2mm
  • Pitch: 20mm
  • Overall length: 70mm
  • Shaft Diameter: 9mm
  • Drive Square: 7mm
  • Tapping Drill Size: 11.50mm