Drill Bits - Multi Bit (Step Drills)

Multi Bit (Step Drills)
Black Oxide Finished

  • High quality high speed steel
  • Triple tempered for longer tool life
  • Double flute for fast cutting action
Multi Bit
Black Oxide Finished
Part # Size Step
MLT 1 1/8" - 1/2" 13
MLT 2 3/16" - 1/2" 6
MLT 3 1/4" - 3/4" 9
MLT 4 3/16" - 7/8" 12
MLT 5 7/16" - 1 1/8" 12
MLT 7* 1/4" - 1 1/2" 11
MLT 10 1/2" 1
MLT 12 3/8" 1
* MLT 7 has 3 flutes

Multi Bit (Step Drills)
Titanium Coated

  • Triple Tempered high speed steel
  • Double flute for fast cutting action
  • Lasts 3-6 times longer
Multi Bit
Titanium Coated
Part # Size Step
MLT 1T 1/8" - 1/2" 13
MLT 2T 3/16" - 1/2" 6
MLT 3T 1/4" - 3/4" 9
MLT 4T 3/16" - 7/8" 12
MLT 5T 7/16" - 1 1/8" 12
MLT 7T 1/4" - 1 1/2" 11
MLT 10T 1/2" 1
MLT 12T 3/8" 1
See Recommended Cutting Speeds below.
 
Multi 1
Multi 1
13 step sizes up to 1/2"
1/8" 5/16"
5/32" 11/32"
3/16" 3/8"
7/32" 13/32"
1/4" 7/16"
9/32" 15/32"
  1/2"
Multi 2
Multi 2
6 step sizes up to 1/2"
3/16"
1/4"
5/16"
3/8"
7/16"
1/2"
 
Multi 3
Multi 3
9 step sizes up to 3/4"
1/4" 9/16"
5/16" 5/8"
3/8" 11/16"
7/16" 3/4"
1/2"  
Multi 4
Multi 4
12 step sizes up to 7/8"
3/16" 9/16"
1/4" 5/8"
5/16" 11/16"
3/8" 3/4"
7/16" 13/16"
1/2" 7/8"
 
Multi 5
Multi 5
12 step sizes up to 1 1/8"
7/16" 13/16"
1/2" 7/8"
9/16" 15/16"
5/8" 1"
11/16" 1 1/16"
3/4" 1 1/8"
Multi 7
Multi 7
11 step sizes up to 1 1/2"
1/4" 1"
3/8" 1 1/8"
1/2" 1 1/4"
5/8" 1 3/8"
3/4" 1 1/2"
7/8"  
 
Multi 10
Multi 10
1 step size
1/2"
Multi 12
Multi 12
1 step size
3/8"
 

Drills true round holes in stainless steel, mild steel, brass, copper, aluminum, plastic and woods up to 1/8" thick.

Stainless steel and aluminum should be drilled at speeds no faster than 300 rpm. Cutting oil must be used to preserve the life of the cutting tool when exceeding diameters of 1/2" and up.

Electrical, automotive, plumbing, sheet metal duct work, heating & cooling, pilot holes for knockout punches.
Recommended Cutting Speeds*
Size RPM
1/8" - 3/8"
 1200 RPM
3/8" - 1/2"
 600 RPM
1/2" - 5/8"
 400 RPM
5/8" - 3/4"
 350 RPM
3/4" - 7/8"
 300 RPM
1"
 260 RPM
1 1/8"
 240 RPM
1 1/2" 200 RPM
* These are approximate RPM speeds designed to extend the life of your cutting tools. Cutting oil should always be used.
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