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      Item no.: 117020

      Stub stepped drill HSS 90° uncoated

      Brand: GARANT
      Point angle 118
      Tool material HSS
      Skaft Parallel shank to h8
      Norm DIN 1897
      Countersink angle 90
      Tolerance nominal ⌀ h8
      No price available

      Stub stepped drill HSS 90° uncoated

      In stock

      Description

      Version:

      Very sturdy. Tight concentricity tolerances between drill ⌀ and counterbore ⌀ guarantee exact alignment.
      Special surface treatment, resulting in reduced tendency to edge build-up and improved chip evacuation.

      Advantage:

      Hole and countersink are produced in one operation and precisely aligned.

      Application:

      Particularly suitable for NC machines due to high positional accuracy, excellent centring properties and great sturdiness. The preceding centring operation can thus often be omitted. For thread tapping drill holes to DIN 336 sheet 1 with 90° countersink. In the following operation, the tap therefore does not have to cut into the sharp edge of the hole.

      Technical Data

      Skaft
      Parallel shank to h8 
      Tool material
      HSS 
      Coating
      uncoated 
      Countersink angle
      90 degrees
      Point angle
      118 degrees
      Shank tolerance
      h8 
      Tolerance nominal ⌀
      h8 
      Norm
      DIN 1897 
      Colour ring
      without 

      Application Table

      Aluminium (short chipping)
      N
      45
      Steel < 500 N/mm²
      P
      40
      Steel < 750 N/mm²
      P
      30
      Steel < 900 N/mm²
      P
      25
      GG(G)
      K
      25
      CuZn
      N
      80
      Oil
       
      wet maximum