Step Up Drill Bit

3pcs Hex Shank Black Oxide High Speed Steel Step Cone Drill Bit with Spiral Flute

  • HSS material provides high hardness, rustproof, solid, and durable quality.
  • Black oxide coated can reduce friction and heat when drilling.
  • 118-degree point tip can prevent walking when drilling and will increase the cutting speed.
  • The double flute spiral blade design makes the cutting faster and smoother.
  • Ideal for drilling 5mm aluminum, wood, sheet metal, plastic, etc.
Product Description
More Choice For You: HomeStep Drill Bit
Product Name
3pcs Hex Shank Black Oxide High Speed Steel Step Cone Drill Bit with Spiral Flute
Size
4-12mm, 4-20mm, 4-32mm
Material
M2
Flute Type
Spiral Flute
Flute Number
Double Flute
Shank
Three Flats Shank
Surface Finish
Black Oxide
Package
3Pcs in One Box

3pcs Hex Shank Black Oxide High Speed Steel Step Cone Drill Bit with Spiral Flute

Spiral Flute Step Drills (Metric)
Size (mm)
Number of Steps
L1 (mm)
L2 (mm)
D1 (mm)
D2 (mm)
4-12
5
62
22
12
6
4-12
9
71
22
12
6
4-20
9
71
22
20
8
4-22
10
85
22
22
8
6-30
13
93
22
30
10
4-32
14
99
23
32
10
4-39
13
108
25
39
10
5-35
13
73
25
35
13
10-45
9
98
25
45
13
6-60
12
113
25
60
13
Spiral Flute Step Drills (Inch)
Size (inch)
Number of Steps
L1 (inch)
L2 (inch)
D1 (inch)
D2 (inch)
3/16-1/2
6
2 41/64
7/8
3/16-1/2
1/4
1/8-1/2
13
2 59/64
7/8
1/8-1/2
1/4
1/4-3/4
9
2 51/64
7/8
1/4-3/4
3/8
3/16-7/8
12
3
7/8
3/16-7/8
3/8
1/4-1 3/8
10
2 61/64
7/8
1/4-1 3/8
3/8
* Custom-tailor would be available against customers’ requirements

 

 

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