• Tap, 4-40, Spiral Flute
  • Taps, Spiral Flute, Individual Sizes
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Taps, Spiral Flute, Individual Sizes

Taps, Spiral Flute, Individual Sizes

$4.95
$4.95
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In stock

6199 (B07 - 06)

Key Features

  • Spiral fluted bottoming taps - two and three flute
  • Ground from solid High Speed Steel (HSS) with ground threads
  • Threading from 4-40 to 10-32 (two flute)
  • Threading from 1/4"-20 to 1/2"-20 (three flute)

WARNING: This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

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Product Information

Description

These taps are spiral fluted and we carry two and three flute spiral fluted bottoming taps in sizes from 4-40 - 10-32 (two flute) and 1/4"-20 - 1/2"20 (three flutes).

Having 1-2 lead threads, and little to no taper, a bottoming tap is used to continue threading a blind hole. This allows the tap to cut threads to the bottom or nearly to the bottom of the hole. This design however makes bottoming taps ill designed for starting a hole and another type of tap should be used for that purpose. Use the bottoming tap to continue the partially threaded hole to the bottom.

Individual taps have course or fine threading and different thread allowances. See Specifications for details.

*Bottoming taps are not necessarily flat on the bottom, they sometimes have a 60-degree tapered point from the manufacturing process.

Chris' Tips

Need help choosing the correct tap? Try this quick guide: Choosing the Correct Tap

Here is a chart of Tap & Clearance Drill Sizes

Specifications

Tap 4-40 Spiral Flute - Two flute coarse thread, with an H2 thread allowance (plus 0.0005 to plus 0.0010).
Tap 6-32 Spiral Flute - Two flute coarse thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 8-32 Spiral Flute - Two flute coarse thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 10-24 Spiral Flute - Two flute coarse thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 10-32 Spiral Flute - Two flute fine thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 1/4-20 Spiral Flute - Two flute coarse thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 1/4-28 Spiral Flute - Two flute fine thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 5/16-18 Spiral Flute - Two flute coarse thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 5/16-24 Spiral Flute - Two flute fine thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 3/8-16 Spiral Flute - Two flute coarse thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 3/8-24 Spiral Flute - Two flute fine thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 1/2-13 Spiral Flute - Two flute coarse thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).
Tap 1/2-20 Spiral Flute - Two flute fine thread, with an H3 thread allowance (plus 0.0010 to plus 0.0015).