#4 - 40 Bottoming Tap, High Speed Steel - National Coarse Thread

Model #: TAB-4-40

Price: $2.90

Description: #4-40 HS Bottoming Tap 0300-0121

• Thread Diameter: #4
• Threads per Inch: 40
• High Speed Steel.
• Ground Thread.
• Recommended Drill Size: #43

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.