Skip to content
  • 💳 More for your money with 20-40% off! 💳
  • 💳 More for your money with 20-40% off! 💳
Irwin Fashion OutletIrwin Fashion Outlet
  • Menu
    • No products in the cart.

  • Cart

    No products in the cart.

  • Power Tool Accessories
    • Drill Bits
    • Saw Blades
    • Router Bits
    • Drill Parts & Attachments
  • Hand Tools
    • Pliers & Plier Sets
    • Clamps & Vises
    • Taps & Dies
    • Cutting & Crimping Tools
    • Chisels & Pry Bars
    • Wrenches & Wrench Sets
    • Hand Saws & Blades
    • Nut Drivers & Keys
    • Punches & Knockout Punch Sets
    • Screwdrivers
    • Sockets & Socket Adapters
    • Hammers
  • Plumbing Tools & Cements
    • Pipe Cutters
    • Plumbing Wrenches & Specialty Tools
  • Levels & Measuring Tools
    • Chalk Reels & Line Chalk
    • Levels
    • Measuring Tools
    • Writing Utensils
  • Tool Storage & Work Benches
    • Tool Bags
    • Portable Tool Boxes
  • Electrical Testers & Tools
    • Wire Strippers, Crimpers & Cutters
Home / Power Tool Accessories / Drill Bits
  • IRWIN Woodboring Drill Bits Classic 14-Piece Assorted Woodboring Spade Drill Bit Set -Irwin Fashion Outlet 05384883 scaled
  • IRWIN Circular Saw Blades Irwin Marathon Small Diameter Saw Blades Marathon 7-1/4-in 60-Tooth Tungsten Carbide-tipped Steel Circular Saw Blade -Irwin Fashion Outlet 44357413
Sale!
Add to wishlist
IRWIN Step Drill Bits Unibit 3PC STP BT Set #1 #4 #4 -Irwin Fashion Outlet 42172851
IRWIN Step Drill Bits Unibit 3PC STP BT Set #1 #4 #4 -Irwin Fashion Outlet 42511389
IRWIN Step Drill Bits Unibit 3PC STP BT Set #1 #4 #4 -Irwin Fashion Outlet 42511389

IRWIN Step Drill Bits Unibit 3PC STP BT Set #1 #4 #4

$64.98 $48.74

Buy Now
SKU: irwin_2674741 Categories: Drill Bits, Power Tool Accessories Tags: IRWIN, Step Drill Bits
  • Quality products, fair prices.
  • Shop with ease, buy with confidence.
  • Peace of Mind with Every Purchase
  • Buy with Peace of Mind
Browse
  • Electrical Testers & Tools
    • Wire Strippers, Crimpers & Cutters
  • Hand Tools
    • Chisels & Pry Bars
    • Clamps & Vises
    • Cutting & Crimping Tools
    • Hammers
    • Hand Saws & Blades
    • Nut Drivers & Keys
    • Pliers & Plier Sets
    • Punches & Knockout Punch Sets
    • Screwdrivers
    • Sockets & Socket Adapters
    • Taps & Dies
    • Wrenches & Wrench Sets
  • Levels & Measuring Tools
    • Chalk Reels & Line Chalk
    • Levels
    • Measuring Tools
    • Writing Utensils
  • Plumbing Tools & Cements
    • Pipe Cutters
    • Plumbing Wrenches & Specialty Tools
  • Power Tool Accessories
    • Drill Bits
    • Drill Parts & Attachments
    • Router Bits
    • Saw Blades
  • Tool Storage & Work Benches
    • Portable Tool Boxes
    • Tool Bags
  • Uncategorized
  • Description
  • Additional information
  • Reviews (0)

IRWIN Unibit® Step Drill Bits are ideal for drilling holes into thin materials such as stainless steel or sheet metal. The 3 piece set includes 2 of the most common IRWIN Unibit Step Drill Bits along with the new double-flute design #4 Unibit that offers 2X FASTER DRILLING.

  • DRILL THROUGH A VARIETY OF MATERIALS Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
  • VERSATILE DESIGN FOR PRECISE HOLES For drilling holes from 1/8-in to 7/8-in in diameter (3.2mm to 22.2mm). #1 has 13 steps 1/8-in to 1/2-in (3.2mm to 12.7mm) #4 has 12 steps 3/16-in to 7/8-in (4.7mm to 22.2mm)
  • SET INCLUDES One #1 single-flute step drill bit, one #4 single-flute step drill bit, one #4 double-flute step drill bit
  • REDUCED SLIPPING Shank design helps to prevents slipping in drill chuck
  • FASTER DRILLING #4 double-flute IRWIN Unibit only versus #4 single-flute IRWIN Unibit, average of first 10 holes in 1008 Steel
Set/Individual

Set

Shank Type

3-flat

Sub-Brand

Unibit

Diameters of Holes Drilled

3/16-in to 7/8-in

CA Residents: Prop 65 Warning(s)

Yes

Number of Hole Sizes

12

Warranty

None

Package Quantity

3

Shank Size

Set

Brand/Model Compatibility

Universal

Material

High-speed steel

Step Size

Set

Reviews

There are no reviews yet.

Be the first to review “IRWIN Step Drill Bits Unibit 3PC STP BT Set #1 #4 #4” Cancel reply

Related products

Sale!
Add to wishlist
Quick View

Hand Tools

IRWIN Visegrip Quick Adjusting GrooveLock 8-in Electrical V-jaw Pliers

$14.98 $11.24
Sale!
Add to wishlist
Quick View

Hand Saws & Blades

IRWIN Hand Saws ProTouch 10-in Dovetail Cut Door Jamb Saw

$11.48 $8.61
Sale!
Add to wishlist
Quick View

Hand Tools

IRWIN VISE-GRIP 13.25-in Straight Compound Long Reach Pliers

$15.98 $11.99
Sale!
Add to wishlist
Quick View

Power Tool Accessories

IRWIN Circular Saw Blades Irwin Marathon Large Diameter Saw Blades Marathon 2-Pack 10-in 40-Tooth Tungsten Carbide-tipped Steel Miter/Table Saw Blade Set

$34.98 $26.24
Sale!
Add to wishlist
Quick View

Power Tool Accessories

IRWIN Circular Saw Blades Irwin Marathon Large Diameter Saw Blades Marathon 2-Pack 12-in 40-Tooth Tungsten Carbide-tipped Steel Miter Saw Blade Set

$39.98 $29.99
Sale!
Add to wishlist
Quick View

Power Tool Accessories

IRWIN Circular Saw Blades Irwin Marathon Small Diameter Saw Blades Marathon 7-1/4-in 60-Tooth Tungsten Carbide-tipped Steel Circular Saw Blade

$15.98 $11.99
Sale!
Add to wishlist
Quick View

Hand Saws & Blades

IRWIN Hand Saws Premium Pro Drywall Specialty Saw

$11.98 $8.99
Sale!
Add to wishlist
Quick View

Cutting & Crimping Tools

IRWIN VISE-GRIP Diagonal Cutting Pliers

$16.98 $12.74
MY ACCOUNT
  • Cart
  • Checkout
  • My account
  • Wishlist
ABOUT US
  • About Us
  • FAQ
  • Returns & Exchanges
  • Delivery
  • Contact Us
LEGAL
  • Privacy Policy
  • Payment Method
  • Shipping & Returns
  • Term and Conditions
Signup for Newsletter

Stay up to date with news and promotions by signing up for our newsletter.

    Copyright 2023 © irwinoutlet.com
    • Power Tool Accessories
      • Drill Bits
      • Saw Blades
      • Router Bits
      • Drill Parts & Attachments
    • Hand Tools
      • Pliers & Plier Sets
      • Clamps & Vises
      • Taps & Dies
      • Cutting & Crimping Tools
      • Chisels & Pry Bars
      • Wrenches & Wrench Sets
      • Hand Saws & Blades
      • Nut Drivers & Keys
      • Punches & Knockout Punch Sets
      • Screwdrivers
      • Sockets & Socket Adapters
      • Hammers
    • Plumbing Tools & Cements
      • Pipe Cutters
      • Plumbing Wrenches & Specialty Tools
    • Levels & Measuring Tools
      • Chalk Reels & Line Chalk
      • Levels
      • Measuring Tools
      • Writing Utensils
    • Tool Storage & Work Benches
      • Tool Bags
      • Portable Tool Boxes
    • Electrical Testers & Tools
      • Wire Strippers, Crimpers & Cutters
    • Newsletter

    Login

    Lost your password?