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Countersinks drill downwards a small amount in order to make a quality starting hole and a profile. Follow up with a secondary drill for the full depth of cut of the work-piece. They don't route along a slot. Combination drill/countersinks provide exceptional starting positioning for secondary drills, PLUS provide qualified countersink dimensions for screw heads, etc. Premium Aluminum Titanium Nitride (AlTiN) coating provides quantum increases in productivity, either in terms of speed or longevity, with or without coolant.

Excellent for cutting:

  • Stainless Steel
  • Steel
  • Cast Iron
  • Titanium
  • Non-Ferrous
  • Soft Plastics
  • Composites
  • Cermet

Use on manual or CNC driven lathes and manual or CNC driven milling machines.

Do not use on hand-held drills or hand-held routers.

AlTiN coating has many benefits:

  • Extra wear resistance
  • Allows for faster feed and speed rates
  • Cutting edge protected from wear
  • Better chip evacuation
  • Less heat build up
  • Superior cutting quality and extended tool life

Note: For optimal results and to extend tool life use mist lubricant system or air cooling. Please inspect cut and adjust accordingly. Care should be taken to observe proper feeds and speeds according to the work-piece material to avoid damage


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Item #

Dimension D

Dimension D1

Length - "B"

Dimension d

Overall Length



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N/A 3/16 in N/A 5/64 in N/A 5/64 in N/A 3/16 in N/A 2 in N/A Amana Tool Industrial $33.24 Add To Cart
N/A 5/16 in N/A .125 in N/A 1/8 in N/A 5/16 in N/A 2 1/8 in N/A Amana Tool Industrial $49.89 Add To Cart
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