Description

9.0mm diameter and 81mm 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