Viking Drill & Tool Fractional Spiral Flute Semi-Bottoming Taps - 52° Spiral Type 39 Bright Finish: Metric
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Bright Finish recommended in aluminum, zinc, copper, wood refrigeration die casting, auto hardware, and epoxy-based plastics.
Right Hand Hi-Helix Flutes - Ground Thread - High Speed Steel • Semi-bottoming style can be used for plug or bottoming applications • Helical flutes provide shear cutting to facilitate evacuation of chips from the hole.
52º Helix Angle - Can be used for plug or bottoming applications •Allows for threading close to bottom or blind holes •Recommended for tapping deep holes in copper, brass, aluminum and other soft ductile materials