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Milwaukee Thunderweb HSS-G Metal Drill Bit 5.5mm – Pack of 10

Description

5.5mm diameter and 57mm 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