This fully ground M42 cobalt HSS twist drill bit is designed for accurate drilling in stainless steel and other compatible metals. Select a 3.2 mm or 5.2 mm diameter, supplied individually as one drill bit per purchase.
Key Features
-
M42 Cobalt HSS: Manufactured from M42 high-speed steel containing 8% cobalt for improved hardness, wear resistance and cutting-edge durability.
-
135° Drill Point: The precision-ground point with double-relief geometry supports accurate starting and efficient penetration.
-
Fully Ground Construction: Ground cutting edges and flutes help reduce friction and support clean, consistent drilling.
-
Efficient Chip Removal: Wide spiral flutes provide space for chip evacuation during metalworking operations.
-
Straight Round Shank: Compatible with three-jaw drill chucks capable of accepting the selected 3.2 mm or 5.2 mm shank diameter.
Available Variants
| Product Code |
Drill Diameter |
Shank Diameter |
Flute Length |
Overall Length |
| 000503-3.2 |
3.2 mm |
3.2 mm |
42 mm |
71 mm |
| 000503-5.2 |
5.2 mm |
5.2 mm |
64 mm |
95 mm |
Product Specifications
| Specification |
Details |
| Product Type |
Straight-Shank Twist Drill Bit |
| Material |
M42 cobalt high-speed steel (HSS Co8) |
| Cobalt Content |
8% |
| Available Diameters |
3.2 mm and 5.2 mm |
| Point Angle |
135° |
| Point Geometry |
Double-relief design |
| Manufacturing Process |
Fully ground |
| Flute Type |
Spiral flute |
| Shank Type |
Straight round shank |
| Sales Unit |
1 pcs |
Applications
- Drilling compatible stainless-steel grades
- Machining carbon steel, alloy steel and tool steel
- Drilling cast-iron components
- Producing holes in aluminium and copper workpieces
Tool Compatibility
- Handheld electric drills with a compatible three-jaw chuck
- Bench drills and drill presses
- Machine tools and machining centres with a suitable drill chuck or collet
- The chuck or collet must match the selected 3.2 mm or 5.2 mm round shank
Operating Guidance
- Select the spindle speed and feed rate according to the drill diameter and workpiece material.
- Use a lower cutting speed when drilling stainless steel, high-strength steel or other difficult-to-machine materials.
- Apply suitable cutting fluid where appropriate to reduce heat and cutting-edge wear.
- Secure the workpiece and confirm that the drill bit is correctly centred and firmly clamped before operation.
Included Components
- 1 × M42 cobalt HSS twist drill bit in the selected diameter