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1/4 In. to 3/4 In. High-Speed Steel Step Drill Bit
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SDH3
The Bosch line of step drills offers 13 different hole sizes with a single bit. The step drill bits are ideal for electrical, plumbing and HVAC contractors. Typical step drill bit applications include electrical knockouts, running conduit, drawbolt holes, faucet installations, auto body work, running freon lines, edge boring steel and hollow doors.
Benefits
Self-starting point starts on contact
Balance double flute eliminates chatter and vibration
Resharpenable cutting edge provides longer tool life
Three-flat shank for reduced slippage
For use with all common drilling needs
Drills clean, accurate holes in these thin materials (up to 1/8 In.): sheet metal, ducts, steel, copper, brass, aluminum, plastic, plexiglass, wood, veneers, vinyl siding, plasterboard, PVC, stainless steel and cast iron
Technical Data
| *Note | Drill bits (or extension + drill bit) in excess of 8" should never exceed 600 RPM |
| Application | Ideal for cutting medium size holes |
| Diameter | 1/4" to 3/4" |
| Flute Length | 2.0 |
| Increments | 1/16" |
| Length | 3.0" |
| Notes | Ideal dor cutting medium size holes |
| Number of Hole Sizes | 9.0 |
| Shank Diameter | 0.375 |
| Step Depth | 1/8" |
SDH3
SDH3
SDH1
SDH10
SDH11
SDH2
SDH4
SDH5
SDH6
SDH7
SDH8
SDH9
Other sizes
SDH5
Diameter
7/8"
Increments
N/A
Step Depth
N/A
Number of Hole Sizes
1
Shank Diameter
0.375
SDH6
Diameter
3/16" to 1/2"
Increments
1/16"
Step Depth
3/8"
Number of Hole Sizes
6
Shank Diameter
0.25
SDH7
Diameter
9/16" to 1"
Increments
1/16"
Step Depth
1/8"
Number of Hole Sizes
8
Shank Diameter
0.375
SDH8
Diameter
1/2"
Increments
N/A
Step Depth
N/A
Number of Hole Sizes
1
Shank Diameter
0.25
SDH9
Diameter
13/16" to 1-3/8"
Increments
1/16"
Step Depth
1/8"
Number of Hole Sizes
10
Shank Diameter
0.5
SDH1
Diameter
1/8" to 1/2"
Increments
1/32"
Step Depth
1/8"
Number of Hole Sizes
13
Shank Diameter
0.25
SDH10
Diameter
1/4" to 1-3/8"
Increments
1/8"
Step Depth
1/8"
Number of Hole Sizes
10
Shank Diameter
0.375
SDH11
Diameter
1-1/8"
Increments
N/A
Step Depth
N/A
Shank Diameter
0.5
SDH2
Diameter
3/16" to 7/8"
Increments
1/16"
Step Depth
1/8"
Number of Hole Sizes
12
Shank Diameter
0.375
SDH4
Diameter
1/4", 7/8", 1-1/8"
Increments
N/A
Step Depth
5/32"
Number of Hole Sizes
3
Shank Diameter
0.375