High-precision countersink 90° 20,5 mm

Article no.: 150390 20,5
plus VAT at the current rate Prices plus delivery costs
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External ⌀ Dc (mm) Unit price incl. VAT
  • Countersink tip angle: 90
  • Tool material: HSS
  • Number of cutting edges Z: 3
  • Standard: DIN 335 D
  • Shank: Morse taper

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    Product details

    Technical Data

    External ⌀ 20.5 mm
    Coating uncoated
    Countersink tip angle 90 degrees
    Tool material HSS
    Number of cutting edges Z 3
    Standard DIN 335 D
    Shank Morse taper
    Through-coolant no
    smallest countersink ⌀ for holes from 3.5 mm
    Overall length L 100 mm
    Morse taper MT 2
    for countersunk screws DIN 7991 M10
    Feed f in steel < 500 N/mm2 0.16 mm/rev.
    Colour ring without
    Pre-drill ⌀ 3.5 mm
    Type of product Stepped drill and countersink

    Identification numbers & Classifications

    Article number 150390 20,5
    EAN / GTIN 4045197086730
    Manufacturer number 150390 20,5

    Application Table

    Alu plastics
    N
    70
    Aluminium (short chipping)
    N
    33
    Steel < 500 N/mm²
    P
    28
    Steel < 750 N/mm²
    P
    27
    Steel < 900 N/mm²
    P
    27
    wet maximum
     
    dry
     

    Description

    Version:

    Countersinks radially relief ground. Chip flutes are ground from solid up to size 31. Chip angle varies with the countersink ⌀ for optimum chip formation. Countersink point and circumference are relief ground and cut easily.
    High-precision countersink, produced with tight manufacturing tolerances similar to DIN 335-D.

    Note:

    For suitable reducing adapters for tools with MT shanks see No. 343000-343530.
    For countersink bits with shank 6.3 mm (1/4 inch) see Group 67.

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    Colour ring without without green
    for countersunk screws DIN 7991 M10 M10 M10
    Overall length L 100 100 63
    Countersink tip angle 90 90 90
    Standard DIN 335 D DIN 335 D DIN 335 C
    smallest countersink ⌀ for holes from 3.5 3.5 3.5
    Type of product Stepped drill and countersink Stepped drill and countersink Stepped drill and countersink

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