Step Cone Drill Bit
HSS 4241 Round Shank Unibit Double Spiral Flute Step Tapered Drill Bit Set for Metal Drilling
- Forged from high-quality titanium coated high-speed steel.
- Suitable for drilling thinner stainless steel, carbon steel, aluminum, iron, and other materials.
- The step drill bit sets have a clear scale mark.
- Universal round shank.
- Step drill bits can drill different kinds of diameter holes, which greatly saves you a lot of trouble.
- Product Details
- Factory
- Material
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Product Description
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More Choice For You: Home > Step Drill Bit
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Product Name
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HSS 4241 Round Shank Unibit Double Spiral Flute Step Tapered Drill Bit Set for Metal Drilling
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Size
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4-12mm, 4-20mm, 4-32mm
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Material
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HSS 4241 (We Also Have Hss4341, M2, M35，M42)
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Flute Type
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Spiral Flute (We Also Have Straight Flute)
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Flute Number
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Double Flute (We Also Have Single Flute, Three Flute)
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Shank
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Round Shank (We Also Have Quick Change Hex Shank, Three Flats Shank, Double R Shank)
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Surface Finish
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Titanium Coated (We Also Have Amber Color, Black Oxide, Black and Bright, Bright, and so on)
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Package
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3Pcs in Metal box
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Spiral Flute Step Drills (Metric)
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Size (mm)
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Number of Steps
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L1 (mm)
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L2 (mm)
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D1 (mm)
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D2 (mm)
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4-12
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5
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62
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22
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12
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6
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4-12
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9
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71
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22
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12
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6
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4-20
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9
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71
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22
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20
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8
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4-22
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10
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85
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22
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22
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8
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6-30
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13
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93
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22
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30
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10
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4-32
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14
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99
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23
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32
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10
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4-39
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13
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108
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25
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39
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10
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5-35
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13
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73
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25
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35
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13
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10-45
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9
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98
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25
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45
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13
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6-60
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12
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113
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25
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60
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13
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Spiral Flute Step Drills (Inch)
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Size (inch)
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Number of Steps
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L1 (inch)
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L2 (inch)
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D1 (inch)
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D2 (inch)
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3/16-1/2
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6
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2 41/64
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7/8
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3/16-1/2
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1/4
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1/8-1/2
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13
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2 59/64
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7/8
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1/8-1/2
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1/4
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1/4-3/4
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9
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2 51/64
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7/8
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1/4-3/4
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3/8
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3/16-7/8
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12
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3
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7/8
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3/16-7/8
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3/8
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1/4-1 3/8
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10
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2 61/64
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7/8
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1/4-1 3/8
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3/8
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* Custom-tailor would be available against customers’ requirements
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