Irwin® Unibit®

Irwin® Unibit® 16103 Step Drill Bit, 6 mm Dia Min Hole, 18 mm Dia Max Hole, 7 Steps, HSS, 7 Hole Sizes, 3/8 in Shank

16103 MFG #: 16103
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Non-Stock Item
Irwin® Unibit® 16103 Step Drill Bit, 6 mm Dia Min Hole, 18 mm Dia Max Hole, 7 Steps, HSS, 7 Hole Sizes, 3/8 in Shank
  • Applicable Materials: Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
  • Country of Origin: US
  • Cutting Edge Material: HSS
  • Drill Diameter Measurement System: Metric
  • Finish: TiN Coated
  • Hole Sizes Cut: 10 mm/12 mm/14 mm/16 mm/18 mm/6 mm/8 mm
  • Manufacturer Name: Stanley Black & Decker
  • Material: HSS
  • Maximum Hole Diameter: 18 mm
  • Minimum Hole Diameter: 6 mm
  • Number of Flutes: 1
  • Number of Hole Sizes: 7
  • Number of Steps: 7
  • Overall Length: 2-9/16 in
  • Point Type: Self-Starting SpeedPoint®
  • Shank Size: 3/8 in
  • Shank Type: 3-Flat
  • Step Depth: 2 mm
Irwin® Unibit® step drill bits are ideal for drilling holes in just about any type of thin material. General purpose high speed steel Unibit® step drill bits are perfect for use in mild steel, copper, brass, aluminum, plexiglass, wood, and laminate. Our titanium nitride coated (TiN) bits resist heat and friction, which extends the life of the cutting edge six times longer than standard step drills. And, our cobalt step drill bits are engineered with m35 cobalt steel for maximum life when drilling in the toughest steel, including stainless steel. Most Unibit® step drills are designed with a SpeedPoint® tip that guarantees fast starts. They're manufactured with a single flute cutting edge that drills multiple sizes of true, round holes with precise step control. Plus, the hole sizes are permanently laser etched on the inside of the flute, so they can be easily identified throughout the life of the bit.
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  • Item Features
  • Application
  • Single flute cutting edge for greater control through steps
  • 3 flatted shank prevents slipping in drill chuck
  • New speed point tip penetrates faster than previous Unibit® and prevents walking
  • Geometry of single flute cutting edge drills true, round holes and provides maximum step control
  • Laser etched sizes inside flute for easy and permanent hole size identification
  • Titanium nitride coating resists heat and friction, extending the cutting edge life up to six times longer than other high speed steel step drill bits
For drilling holes into thin materials