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
| Product Description | ||||
| More Choice For You: Home > Step Drill Bit | ||||
| Product Name | HSS 4241 Round Shank Unibit Double Spiral Flute Step Tapered Drill Bit Set for Metal Drilling | |||
| Size | 4-12mm, 4-20mm, 4-32mm | |||
| Material | HSS 4241 (We Also Have Hss4341, M2, M35，M42) | |||
| Flute Type | Spiral Flute (We Also Have Straight Flute) | |||
| Flute Number | Double Flute (We Also Have Single Flute, Three Flute) | |||
| Shank | Round Shank (We Also Have Quick Change Hex Shank, Three Flats Shank, Double R Shank) | |||
| Surface Finish | Titanium Coated (We Also Have Amber Color, Black Oxide, Black and Bright, Bright, and so on) | |||
| Package | 3Pcs in Metal box | |||
| 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 | |||||
