Spiral step drill bit FORUM, HSS, Ø 4 – 20 mm

Universal spiral step drill bit FORUM.

Characteristics:

•  HSS

•  Laser marking of the steps Ø

•  2 cutting edges

•  Spiral groove

•  Sliding in the chuck is prevented by the 3 – wall shank of the drill

•  Step length: 4 mm

•  Total length: 67 mm

•  GripØ h8: 8 mm

•  Steel < 850 N: recommended

•  Steel < 1000 N: suitable to a limited extent

•  INOX: suitable to a limited extent

•  Aluminum, non-ferrous metals, non-ferrous alloy: recommended

•  Standard: industrial

•  Diameter of the drilling steps: 4, 6, 8, 10, 12, 14, 16, 18, 20 mm