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Karnasch Premium tap drill bits

Counterboring with Karnasch tap drill bits to remove jammed taps saves time and money!

Your tap has broken off and is stuck in the drill hole? In this case, use our solid carbide tap drill bits to remove jammed taps.

Karnasch tap drill bits are made for steel <65 HRC and threads from M3 to M12. They are available in drill depths from 10 mm to 35 mm. 

Approximately 1 to 5 threads can be drilled out with one drill. Due to the cylindrical hexagon shank, the tap drill bits can not only be used on NC machines, but it can also be clamped in normal three- or four-jaw chucks. When used correctly, all materials, including copper, aluminum and hardened materials, will not damage the core hole.

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Steel <65HRC

Drills to remove jammed taps of steel <65HRC

  • For threads from M3 to M12
  • Hexagon and cylindrical shank
  • Drill depth from 10 mm to 35 mm

TAP DRILL BITS KIT

Tap drill bits – also available in a kit!

Karnasch tap drill bits are also available in a kit with seven different drills. The tap dril bits included in the kit have the following thread sizes: M3, M4, M5, M6, M8, M10 and M12.

Discover our kits

TAP DRILL BITS - USER MANUAL

  1. The workpiece must be clamped very stably.
  2. Plane the projecting part of the drill with the workpiece.
  3. Center the drill by 'tapping' several times. When centering on a CNC machine, select a low feed.
  4. The counterboring process can be performed on an NC machine with lubrication (attention: risk of sticking together), as well as manually on a bench or pillar drilling machine. Repeated chip removal is mandatory on all machines.
  5. Remove any remaining chips after the counterboring process with pneumatic air.
  6. Re-tap the thread with a new drill.
  7. After finishing the thread, check the dimensional accuracy with a thread plug gauge.

Karnasch TAP DRILL BITS – PREMIUM QUALITY FOR PROFESSIONAL APPLICATIONS



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Up to 5 threads can be removed

Efficiency

With a Karnasch tap drill bit, up to 5 threads can be removed.

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Cylindrical hexagon shank

Areas of application

Due to the cylindrical hexagon shank, the Karnasch tap drill bits can not only be used on NC machines, but can also be clamped in normal three- or four-jaw chucks.

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Diameter range

From M3 to M12

Highest precision for perfect results due to narrow engineering tolerances. 

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Core hole

Remains undamaged

When used correctly, all materials, including copper, aluminum and hardened materials, will not damage the core hole.

Start your product inquiry

Our service team is looking forward to hearing from you.

 

You can also contact us via:

Telephone: +49 (0) 6203 - 4039 - 0
Telefax: +49 (0) 6203 - 41590
Technical support: technic@karnasch.com

Contact request

If you have any questions about our products or services, or would like to talk to a member of our support team, you can get in touch by clicking below.

magnifier-gray@2x.png

Get in touch

Did you know?

You can also find us on these social media channels:

Facebook Twitter LinkedIn YouTube


Or stay up to date with our newsletter Sign up

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