Counterbores 4 flutes HSS type 0N

COUNTERBORES WITH 4 FLUTES in HSS HRC 63 from Ø 7 to Ø 24.

You can fit them in all the Polledri mandrels of the same group. These counterbores are manufactured to solve all the problems of cylindrical head screw counterboring and spot-facing. With rotatory pilots or drills you can execute simultaneous operations. We advise them for materials with short and normal chip.

SKU: 10.09 Categories: , , , ,

COUNTERBORES WITH 4 FLUTES TYPE 0N

  • In HSS 63 HRC
  • GROUP 0
  • Helix angle: 40°
  • RANGE: From Ø 7 to Ø 24
  • CODE: 10.09
  • EX. Ø 7: 10.09.070

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