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Forum Twist Drill DIN 1869TF HSS 4,5 x 185 mm (Bohrwerkzeuge Überlanger)
Oversize twist drill cylindrical shank, DIN 1869, type TF, HSS, blank, FORUM
- DIN 1869 - HSS - Profile ground - Type TF - Spiral angle 38Â° - Point angle 130Â° - Side chip angle larger than normal - Core thickness considerably thicker than normal - Without core rise - Shank (DIN) cylindrical
Advantage: Special drill for drilling extremely deep holes, with poor chip evacuation and poor cooling. For drilling holes up to 10 x D. Exception: CrNi steels as well as VA steels and similar materials.