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Specialty Drill Bits
Titanium Coated Step Drills
Bosch step drills offer the ability to drill up to thirteen holes with just one drill bit. Cuts are clean and accurate in even the toughest materials including sheet metal,
ducts, steel, copper, brass, aluminum, plastic, plexiglass, wood, veneers, vinyl siding, plasterboard, PVC, stainless steel and cast iron up to 1/8" thick. Ideal for
electrical, plumbing and HVAC contractors with jobs like running conduit, drawbolt holes, electrical knockouts, faucet installations, auto body work, running freon
lines, edge boring steel and hollow doors.
• Super hard titanium coating lasts up to 6 times longer than high speed steel
• Self starting points start on contact
• Balanced double flute design eliminates chatter and vibration
Diameter Inches
Item #
(Increments)
SDT1
1/8" - 1/2" (1/32")
SDT6
3/16" - 1/2" (1/16")
SDT2
3/16" - 7/8" (1/16")
SDT3
1/4" - 3/4" (1/16")
SDT4
1/4" - 7/8" - 1-1/8"
SDT10
1/4" - 1-3/8" (1/8")
SDT12
3/8"
SDT8
1/2"
SDT7
9/16" - 1" (1/16")
SDT9
13/16" - 1-3/8" (1/16")
SDT5
7/8"
SDT11
1-1/8"
High Speed Steel Step Drills
Bosch step drills offer the ability to drill up to thirteen holes with just one drill bit. Cuts are clean and accurate in even the toughest materials including sheet metal,
ducts, steel, copper, brass, aluminum, plastic, plexiglass, wood, veneers, vinyl siding, plasterboard, PVC, stainless steel and cast iron up to 1/8" thick. Ideal for
electrical, plumbing and HVAC contractors with jobs like running conduit, drawbolt holes, electrical knockouts, faucet installations, auto body work, running freon
lines, edge boring steel and hollow doors.
• Self starting points start on contact
• Balanced double flute design eliminates chatter and vibration
Diameter Inches
Item #
(Increments)
SDH1
1/8" - 1/2" (1/32")
SDH6
3/16" - 1/2" (1/16")
SDH2
3/16" - 7/8" (1/16")
SDH3
1/4" - 3/4" (1/16")
SDH4
1/4" - 7/8" - 1-1/8"
SDH10
1/4" - 1-3/8" (1/8")
SDH12
3/8"
SDH8
1/2"
SDH7
9/16" - 1" (1/16")
SDH9
13/16" - 1-3/8" (1/16")
SDH5
7/8"
SDH11
1-1/8"
NOTE: Drill bits (or extension + drill bit) in excess of 8" should never exceed 600 RPM.
NOTE: Drill bits (or extension + drill bit) in excess of 8" should never exceed 600 RPM.
Number of
Step
Shank
Depth
Diameter
Hole Sizes
1/8"
13
1/4"
3/8"
6
1/4"
1/8"
12
3/8"
1/8"
9
3/8"
5/32"
3
3/8"
1/8"
10
3/8"
N/A
1
1/4"
N/A
1
1/4"
1/8"
8
3/8"
1/8"
10
1/2"
N/A
1
3/8"
N/A
1
1/2"
Number of
Step
Shank
Depth
Diameter
Hole Sizes
1/8"
13
1/4"
3/8"
6
1/4"
1/8"
12
3/8"
1/8"
9
3/8"
5/32"
3
3/8"
1/8"
10
3/8"
N/A
1
1/4"
N/A
1
1/4"
1/8"
8
3/8"
1/8"
10
1/2"
N/A
1
3/8"
N/A
1
1/2"
Toll Free: 877-BOSCH-99
Meta l
Application
All common drilling needs
All common drilling needs
All common drilling needs
Ideal for cutting medium size holes
For 1/2" and 3/4" conduit
For 1" conduit and tubing
Knockout
Knockout
Companion bit to SDT1 for diameter
range 1/8" to 1"
For 1" conduit and tubing
Drill perfect size holes for conduit. Ideal for
drawbolt and miniature pilot light holes
Knockout
Application
All common drilling needs
All common drilling needs
All common drilling needs
Ideal for cutting medium size holes
For 1/2" and 3/4" conduit
For 1" conduit and tubing
Knockout
Knockout
Companion bit to SDH1 for diameter
range 1/8" to 1"
For 1" conduit and tubing
Drill perfect size holes for conduit. Ideal for
drawbolt and miniature pilot light holes
Knockout
Dr i l l i ng
Point Type
Self-starting
Self-starting
Self-starting
Self-starting
Self-starting
Self-starting
Self-starting
Self-starting
For hole enlarging
For hole enlarging
Self-starting
Self-starting
Point Type
Self-starting
Self-starting
Self-starting
Self-starting
Self-starting
Self-starting
Self-starting
Self-starting
For hole enlarging
For hole enlarging
Self-starting
Self-starting
201
Boschtools.com
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