Irwin High Speed Steel, TiN Coated or M35 Cobalt Step Drills & Sets

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Irwin High Speed Steel, TiN Coated or M35 Cobalt Step Drills & Sets

Uncoated, TiN Coated or Cobalt Ground From The Solid
Up to 13 different hole sizes without changing bits!


Applications:

  • Specially step drill designed to machine a large number or different hole diameters with a single tool.
  • Single cutting edge creates perfectly round holes in metal, plastic, wood and other thin materials without center punching.
  • Conical design permits as many as 13 different size holes to be drilled with one drill.
  • These drills, depending on the model, have a step 1/8" to 3/8" (3.5mm to 11mm) thick between sizes.
  • Normally intended for use with thin materials.
  • Two general variations are available for either self-starting hole or for enlarging existing holes.
  • 20 different models are available to produce holes from 1/8" to 1-3/8" or 4mm to 35mm.
  • The hardened, high speed steel drill body is available in either an uncoated style or with a TiN coating for longer life in tougher materials.
  • Single flute design helps to ensure perfectly round holes in a wide range of ferrous, non ferrous and non-metallic materials.

Features:

  • Right hand clockwise rotation cutting direction.
  • Single straight flute design.
  • Multi-step design with progressively larger holes.
  • Self-starting or hole enlarging style.
  • Straight shank diameters of 1/4", 3/8", or 1/2" (6.5mm, 10mm or 13mm).
  • Made in U.S.A.

Cobalt:

  • M35 grade provides high heat & abrasion resistance.
  • Longest cutting life.
  • 6 times longer life vs. competition.

Technical Data:

  • Manufactured from high speed steel.
  • 1/8" to 3/8" (3.5mm to 11mm).
  • Ground from solid.
  • Cylindrically ground.
  • Bright finish.