High Quality HSS Step Drill Bit with Spiral Flute
FEATURES
1. Step drill bits are perfect for drilling and enlarging multiple-holes in thin sections of sheet metals, pipes, plexiglass, plastics, wood up to a thickness of 5mm.
2. 135° Split Point Tip: increases cutting speed with self-centering and the drills do not run off center.
3. A variety of hole diameters can be drilled using only one tool.
4. The dimension of drilled hole is exact.
5. Two Flute Design: provides longer life and better chip removal.
6. The Spiral Groove: creates better, less noise, less force has to be used.
| Metric Size Step Drill Bit | ||||
| Drilling Range(mm) | Number of Steps | Dia of Steps(mm) | Overall Length(mm) | Shank Dia(mm) |
| 3-12 | 5 | 3-6-8-10-12 | / | 6 |
| 3-12 | 10 | 3-4-5-6-7-8-9-10-11-12 | / | 6 |
| 3-14 | 12 | 3-4-5-6-7-8-9-10-11-12-13-14 | / | 6 |
| 3-14 | 1 | 3-14 | / | 6 |
| 4-12 | 5 | 4-6-8-10-12 | 65 | 6 |
| 4-12 | 9 | 4-5-6-7-8-9-10-11-12 | 65 | 6 |
| 4-20 | 9 | 4-6-8-10-12-14-16-18-20 | 75 | 8 |
| 4-22 | 10 | 4-6-8-10-12-14-16-18-20-22 | 80 | 10 |
| 4-30 | 14 | 4-6-8-10-12-14-16-18-20-22-2-26-28-30 | 100 | 10 |
| 4-39 | 13 | 4-6-12-15-18-21-24-27-30-33-36-39 | 107 | 10 |
| 5-13 | 5 | 5-7-9-11-13 | 65 | 6.35 |
| 5-20 | 1 | 5-20 | / | / |
| 5-25 | 11 | 5-7-9-11-13-15-17-19-21-23-25 | / | / |
| 5-25 | 11 | 5-7-9-11-13-15-17-19-21-23-25 | 82 | 9.5 |
| 5-35 | 13 | 5-13-15-17-19-21-23-25-27-29-31-33-35 | 82 | 12.7 |
| 6-18 | 7 | 6-8-10-12-14-16-18 | / | 10 |
| 6-20 | 8 | 6-8-10-12-14-16-18-20 | 71 | 9 |
| 6-25 | 7 | 6-9-12-16-20-22.5-25 | 65 | 10 |
| 6-30 | 13 | 6-8-10-12-14-16-18-20-22-24-26-28-30 | 100 | 10 |
| 6-32 | 9 | 6-9-12-16-20-22.5-25-28.5-32 | 76 | 10 |
| 6-35 | 13 | 6-8-10-13-16-18-20-22-25-28-30-32-35 | / | 10 |
| 6-36 | 11 | 6-9-12-15-18-21-24-27-30-33-36 | 85 | 10 |
| 6-38 | 12 | 6-9-13-16-19-21-23-26-29-32-35-38 | 100 | 10 |
| 6-40 | 16 | 6-11-17-23-29-30-31-32-33-34-35-36-37-38- 39-40 |
105 | 13 |
| 8-20 | 7 | 8-10-12-14-16-18-20 | / | / |
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