Cobalt Steel Twist Drill Bit
This cobalt steel twist drill bit is manufactured from M35 cobalt steel for heat resistance and durability. The 135° Quick-Cut points are self-centering, allowing for accurate penetration without walking.
Technical Specifications
Overview
Professional M35 Cobalt Steel Drill Bits
These premium twist drill bits are manufactured from M35 cobalt steel, creating a hardened alloy with a Rockwell hardness of up to 67 HRC. Designed for extreme heat resistance and high-speed cutting, they offer up to twelve times the lifespan of standard HSS bits. The 135° split-point design ensures self-centering accuracy and rapid penetration into hard metals without walking or wandering.
Material & Durability
Hardness Rating
- Material Composition
- M35 Cobalt Steel5% Cobalt (Co5%)Molybdenum Alloy
Technical Standards
Manufacturing Standards
Design Features
Performance Features
- Self-centering split point
- Efficient chip removal groove design
- Extreme heat resistance
- Full automatic grinding for high accuracy
- Point Geometry
- 135° Split-Point (Quick-Cut)
- Shank Type
- Full Ground Straight Shank
Applications
Compatible Machinery
- Li-ion Drilling Machines
- Handle Drilling Machines
- Impact Drilling Machines
- Table Drilling Machines
- Magnetic Drilling Machines
- Compatible Materials
- Stainless SteelCast IronTitanium AlloyMould SteelCopperZinc Coated PipeIron
Size Specifications
Available Sizes & Dimensions
| Diameter (D) | Overall Length (L) | Flute Length (L1) |
|---|---|---|
| 2 | 49 | 24 |
| 3 | 61 | 33 |
| 4 | 75 | 43 |
| 5 | 86 | 52 |
| 6 | 93 | 57 |
| 7 | 109 | 69 |
| 8 | 117 | 75 |
| 9 | 125 | 81 |
| 10 | 133 | 87 |
| 12 | 133 | 87 |
Performance Benchmarks
M35 vs M2 Performance
In testing on 20mm thick stainless steel plates, the M35 cobalt drill bit successfully completed approximately 50 holes, doubling the performance of standard M2 bits which averaged 25 holes under identical conditions.
