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Precistar 3 X D

Solid Carbide Extreme Performance Twist Drill


  • 2 or 3 hole coolant rods are used as per customers’ requests.
  • Sharp tough and straight cutting edges for stable drilling performance.
  • All Precistar 3 x D drills have the K land and corner edge chamfer and better edge chamfer for better tool life.
  • Xtype Web thinning enables easy initial cutting which leads to high accuracy cutting.
  • Wider flute geometry to prevent Chip blocking and gives excellent chip disposal due to large flute width and depth.
  • Suitable for low to high speed drilling and machining for both blind and thru holes.
  • High Quality coatings from Swiss Balzers and Cemecon Germany helps with excellent thermal wear and oxidation resistance.
  • Longer life of the tool even under machining of difficult to cut materials with improved finish finish on holes and giving excellent finish RA values on the hole.
  • Can be drilled upto 3 times the diameter of the drill ( 3 x D).
  • The Precistaris a self-centering, high penetration rate drill, created especially for nickel alloys. The new style geometry improves tool life, while the brand new TiAln coating withstands abrasive applications. Inconel drilling tests reveal a 35% increase in tool life, due in large part to this new, multi-layer coating that we call nano-Si®.
  • Thru coolant drills are widely used to to minimize reaming with tighter tolerances are achieved with STN Precistar thru coolant Drills.


Tolerance - m7
  • Diameter
  • Range
  • 3.00 - 6.00
  • +0.004 / +0.016
  • 6.00 - 10.00
  • +0.006 / +0.021
  • 10.00 - 18.00
  • +0.007 / +0.025
  • 18.00 - 30.00
  • +0.008 / +0.029
Ream Star