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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21 pieces in stock

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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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