Description
The tungsten carbide step drill bit is designed for high-performance steel machining. Its TiSiN coating provides exceptional hardness, wear resistance, and heat resistance, ensuring prolonged tool life and consistent performance. This versatile step drill bit excels in drilling precise holes and chamfering, making it ideal for various steel fabrication tasks. Its robust design and dual functionality make it a valuable addition to any metalworking toolkit, enhancing productivity and precision in industrial workshops and engineering applications.
| Cut dia.(mm) | L1 (mm) | L2 (mm) | Shank Dia.(mm) | L(mm) | Thread Size |
| 3.40 | 11.4 | 28 | 6 | 66 | M4 |
| 4.30 | 13.6 | 28 | 6 | 66 | M5 |
| 5.00 | 16.5 | 41 | 8 | 79 | M6 |
| 6.90 | 21.0 | 47 | 10 | 89 | M8 |
| 8.70 | 25.5 | 55 | 12 | 102 | M10 |
| 10.40 | 30.0 | 60 | 14 | 107 | M12 |
| 12.25 | 34.5 | 65 | 16 | 115 | M14 |
| 14.25 | 38.5 | 73 | 18 | 123 | M16 |
| 7.00 | 21.0 | 47 | 10 | 89 | M8*1 |
| 9.00 | 25.5 | 55 | 12 | 102 | M10*1 |
| 10.50 | 30.0 | 60 | 14 | 107 | M12*1.5 |
| 12.50 | 34.50 | 65 | 16 | 115 | M14*1.5 |
| 14.50 | 38.50 | 73 | 18 | 123 | M16*1.5 |
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