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1/2" - 20 Bottoming Tap, High Speed Steel - National Fine Thread

Model #: TAB-1/2-20

1/2" - 20 Bottoming Tap, High Speed Steel - National Fine Thread

Price: $6.10

Description: 1/2"-20 HS Bottoming Tap 0329-0151

  • Thread Diameter: 1/2"
  • Threads per Inch: 20
  • High Speed Steel.
  • Ground Thread.
  • Recommended Drill Size: 29/64"

Bottoming taps have 1 to 1-1/2 threads of lead, for threading close to the bottom of a blind hole.
Please note that not all bottoming taps are flattened at the end.
Some manufacturers leave a point that you may have to grind off if going very close to the bottom of a hole.

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