Irwin® Unibit® Step Drill Bit, #21, 13/16 in Min Hole Diameter

Description

Irwin® Unibit®, 10221, Hole Enlarging Step Drill Bit, Imperial, #21 Letter/Wire, 13/16 in Diameter Minimum Hole, 1-3/8 in Diameter Maximum Hole, 2-11/16 in Overall Length, 10 Steps, 1/8 in Step Depth, 10 Hole, 1 Flutes, 10, 7/16 in Shank, 3-Flat Shank, SpeedPoint®, HSS Cutting Edge, Bright, Applicable Materials: Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel

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
• Ideal for drilling holes into thin materials such as stainless steel, copper, brass, aluminum, plastic and laminates
• Pilot hole required
• SpeedPoint® tip for fast starts
• Hex shaped shank secures easily in drill
• #1, #2, #10 and #12 sizes have a quick change shank

Applications:

For drilling holes into thin materials

Applicable Materials	Aluminum, Brass, Copper, Laminates, Plastic and Stainless Steel
Cutting Edge Material	HSS
Finish	Bright
Hole Sizes Cut	10
Letter/Wire Size	#21
Material	HSS
Maximum Hole Diameter	1-3/8 in
Minimum Hole Diameter	13/16 in
Number of Flutes	1
Number of Hole Sizes	10
Number of Steps	10
Overall Length	2-11/16 in
Point Type	SpeedPoint®
Shank Size	7/16 in
Shank Type	3-Flat
Step Depth	1/8 in
Manufacturer	Irwin® Unibit®