Milwaukee HSS-G Thunderweb 4.9mm - 10 pc Drill Bits

Pack of 10 drill bits.

EXTREME DURABILITY & LONG LIFE.
 

• 4.9mm diameter and 52mm working length.
• Metal drill bits HSS Ground - DIN 338.
• The THUNDERWEB design is characterised by a conical shaped web which gets thicker towards the back of the drill bit. The web is the internal core of the drill bit.
  
  Parabolic web cross section
• Large web thickness. Strength built in.
• Accepts higher feed pressure and torque.
• Less breakages. Good for drilling deep holes and on curved surfaces.
• Long life.
  
  Flute Geometry
• THUNDERWEB flute form ejects hot chips rapidly. Dissepates heat better increasing lifetime.
• Open flute form reduces drill drawback when drilling deeper holes.
• Sharpened edges reduce binding for faster cleaner cuts.
• Flatter twist angle creates smaller chippings, ideal for drilling harder steels ie: stainless steel.
  
  135° Split Point
• Precision starting, drill won't walk.
• Penetrates quickly.
• Good for drilling on curved surfaces.
• Requires less effort / feed pressure.
• Excellent for very hard materials.
• Polished finish reduces friction and extends drill bit life.
• Supplied in impact resistant ABS case with added rubber corner protection.
  
  THUNDERWEB HSS-G DIN 338
  
  Application guide
  Non-alloyed construction steel, non alloyed case hardened steel (< 400 N/mm² or < HRB 69) : Most suitable
  Non-alloyed construction steel, non alloyed case hardened steel (400-800 N/mm² or < HRC 21) : Most suitable
  Sheet steel (< 800 N/mm² or < HRC 21) : Most suitable
  Non-alloyed tool steel (< 800 N/mm² or < HRC 21) : Most suitable
  Alloyed tool steel (< 800 N/mm² or < HRC 21) : Most suitable
  Alloyed tool steel (> 800 N/mm² or > HRC 21) : Most suitable
  Alloyed hardened & tempered steel (< 1200 N/mm² or < HRC 37) : Not suitable
  Alloyed hardened & tempered steel (> 1200 N/mm² or > HRC 38) : Not suitable
  Stainless steel (< 1000 N/mm² or < HRC 30) : Suitable
  Stainless steel (1000-1200 N/mm² or < HRC 30-37) : Not suitable
  Malleable cast iron (750 N/mm² or HRB 99) : Most suitable
  Soft cast iron (450 N/mm² or HRB 75) : Most suitable
  Hard cast iron (700 N/mm² or HRB 96) : Most suitable
  Aluminium (< 350 N/mm² or < HRC 59) : Suitable
  Copper : Suitable
  Bronze : Most suitable
  Brass : Most suitable
  Magnesium : Not suitable
  Plastics (PVC, polyamide, thermoplastics) : Most suitable
  Wood : Most suitable