Bosch 1" p3 phillips insert bit Reference Guide
Item #
Diameter
(Increments)
Step Depth
Number of
Hole Sizes
Shank
Diameter
Application
Point Type
SDH1
1/8"–1/2" (1/32")
1/8"
13
1/4"
All common drilling needs
Self-starting
SDH6
3/16"–1/2" (1/16")
3/8"
6
1/4"
All common drilling needs
Self-starting
SDH2
3/16"–7/8" (1/16")
1/8"
12
3/8"
All common drilling needs
Self-starting
SDH3
1/4"–3/4" (1/16")
1/8"
9
3/8"
Ideal for cutting medium size holes
Self-starting
SDH4
1/4"–7/8"–1-1/8"
5/32"
3
3/8"
For 1/2" and 3/4" conduit
Self-starting
SDH10
1/4"–1-3/8" (1/8")
1/8"
10
3/8"
For 1" conduit and tubing
Self-starting
SDH8
1/2"
—
1
1/4"
Knockout
Self-starting
SDH7
9/16"–1" (1/16")
1/8"
8
3/8"
Companion bit to SDH1 for diameter range
1/8" to 1" (requires 1/2" pilot hole)
For hole enlarging
SDH9
13/16"–1-3/8" (1/16") 1/8"
10
1/2"
For 1" conduit and tubing (requires 3/4"
pilot hole)
For hole enlarging
SDH5
7/8"
—
1
3/8"
Drill perfect size holes for conduit. Ideal for
drawbolt and miniature pilot light holes
Self-starting
For more details visit
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4
Dr
illing and F
as
tening
Me
tal Dr
illing
146 | 2012/2013 Power Tools & Accessories Catalog
Step Drill Bits
Resharpenable
cutting edge
provides longer
tool life
Self-starting point
starts on contact
Three-flat shank
for reduced slippage
Balance double flute
eliminates chatter
and vibration
Super-hard titanium coating
lasts up to six times longer
than high-speed steel
lasts up to six times longer
than high-speed steel
High-speed steel
Bosch's line of step
drills offer the ability
to drill multiple holes
with a single bit. Cuts
are clean and accurate
even in the toughest
material. Ideal for
electrical, plumbing
and HVAC contractors.
drills offer the ability
to drill multiple holes
with a single bit. Cuts
are clean and accurate
even in the toughest
material. Ideal for
electrical, plumbing
and HVAC contractors.
High-Speed Steel Step Drill Bits
NOTE: Drill bits (or extension + drill bit) in excess of 8" should never exceed 600 RPM
Item #
Diameter
(Increments)
Step Depth
Number of
Hole Sizes
Shank
Diameter
Application
Point Type
SDT1
1/8"–1/2" (1/32")
1/8"
13
1/4"
All common drilling needs
Self-starting
SDT6
3/16"–1/2" (1/16")
3/8"
6
1/4"
All common drilling needs
Self-starting
SDT2
3/16"–7/8" (1/16")
1/8"
12
3/8"
All common drilling needs
Self-starting
SDT3
1/4"–3/4" (1/16")
1/8"
9
3/8"
Ideal for cutting medium size holes
Self-starting
SDT4
1/4"–7/8"–1-1/8"
5/32"
3
3/8"
For 1/2" and 3/4" conduit
Self-starting
SDT10
1/4"–1-3/8" (1/8")
1/8"
10
3/8"
For 1" conduit and tubing
Self-starting
SDT8
1/2"
—
1
1/4"
Knockout
Self-starting
SDT7
9/16"–1" (1/16")
1/8"
8
3/8"
Companion bit to SDT1 for diameter range
1/8" to 1" (requires 1/2" pilot hole)
For hole enlarging
SDT9
13/16"–1-3/8" (1/16") 1/8"
10
1/2"
For 1" conduit and tubing (requires 3/4"
pilot hole)
For hole enlarging
SDT5
7/8"
—
1
3/8"
Drill perfect size holes for conduit. Ideal
for drawbolt and miniature pilot light holes Self-starting
Titanium-Coated Step Drill Bits
NOTE: Drill bits (or extension + drill bit) in excess of 8" should never exceed 600 RPM