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Twist Drill Sets

Triumph Twist Drill Sets are designed to provide you with a clean and accurate cut on all your projects.  These drill sets offer accurate fine point drilling and finished with black and bronze oxide or a Titanium Nitride (TiN) coating to resist corrosion and lengthen the life of your tool. Triumph Twist Drill sets are made from quality materials and are durable and sturdy.   Also available in mechanics length twist drill sets, reduced shank, and screw machine length.

Black Oxide Coating:
Black oxide is the most basic surface treatment for drilling in iron and steel.  It is not recommended for drilling in aluminum, magnesium or similar materials.  
 
Benefits of the black oxide coating are:
  • Increased tempering and stress relieve
  • Reduced galling and chip welding
  • Increased retention of lubricants.
 
Titanium Nitride (TiN) Coating:
The Titanium Nitride (TiN) performance coating can increase tool life and productivity by allowing higher speeds and heavier feeds.  It is an excellent general purpose coating for protecting tools from wear.  TiN coating is an excellent choice for drilling in iron and steel.  It is also recommended for drilling in aluminum, magnesium, or similar materials.
 
Benefits of the TiN Coating are: I
  • Increased surface hardness
  • Reduced coefficient of friction
  • Increased corrosion resistance, thermal barrier, and additional tempering and stress relieving.

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