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Irwin® Unibit® 15221 Hole Enlarging Step Drill Bit, 13/16 in Dia Min Hole, 1-3/8 in Dia Max Hole, 10 Steps, HSS, 10 Hole Sizes, 7/16 in Shank
Price$175.38
Item #VIS15221
BrandIrwin® Unibit®
ManufacturerStanley Black & Decker
Mfr. Model #15221
Country of OriginUS
UNSPSC Code23241606
UnitEA
DGI AvailabilityCall for Availability
Product Features
• Single flute cutting edge for greater control through steps
• 3 flatted shank prevents slipping in drill chuck
• Patented single flute cutting edge gives the user a true round hole every time
• 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
• Pilot hole required
• 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
• SpeedPoint® tip for fast starts
Description
Irwin® Unibit® Step Drill Bit, Hole Enlarging, Imperial, 13/16 in Diameter Minimum Hole, 1-3/8 in Diameter Maximum Hole, 10 Steps, 1/8 in Step Depth, 10 Hole, 1 Flutes, 7/16 in Shank, 3-Flat Shank, SpeedPoint® Point, HSS Cutting Edge, HSS, TiN Coated, Applicable Materials: Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
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.