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

Model #: TAB-1/2-20

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.