DIN1869 HSS m2 extra long twist Drill Bit

Technical Data

• Standard: DIN 1869
• Material: HSS M2 (W6Mo5Cr4V2)
• Hardness: HRC 63-66
• Geometry: 135° split drill point, 38° helix angle, 2 flutes
• Diameter Range: 3-13mm (standard series)
• Length: Total length up to 350mm, working length up to 200mm+
• Accuracy: Diameter tolerance h8, shank tolerance h9
• Surface Finish: Bright/Black Oxide/Coated

Advantages 1. Material Strengths

• Excellent red hardness (maintains hardness at 500-600°C) and wear resistance.
• High toughness for impact resistance, reducing breakage risk.

2. Design Merits

• 135° self-centering drill point eliminates pre-drilling and reduces thrust.
• Extra-long design enables deep hole drilling (up to 12x diameter).
• Fully ground flutes ensure smooth chip evacuation and efficient heat dissipation.

3. Application Benefits

• Compatible with carbon steel, cast iron, non-ferrous metals, and alloys (<1000N/mm²).
• 2x higher feed rate than standard drills, boosting processing efficiency.
• One-clamping deep hole completion reduces tool change frequency.