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High-precision countersink, extra long 90° 20,5 mm

Article no.: 150372 20,5
  • Countersink tip angle: 90
  • Tool material: HSS
  • Number of cutting edges Z: 3
  • Standard: Manufacturer’s standard
  • Shank: Plain shank with h9

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 Manufacturer’s standard
Shank Plain shank with h9
Through-coolant no
smallest countersink ⌀ for holes from 3.5 mm
Overall length L 164 mm
Shank ⌀ Ds 10 mm
for countersunk screws DIN 7991 M10
Feed f in steel < 500 N/mm2 0.16 mm/rev.
Shank tolerance h9
Colour ring without
Pre-drill ⌀ 3.5 mm
Type of product Stepped drill and countersink

Identification numbers & Classifications

Article number 150372 20,5
EAN / GTIN 4045197086204

Application Table

Alu plastics
N
70
Aluminium (short chipping)
N
33
Alu > 10% Si
N
20
Steel < 500 N/mm²
P
28
Steel < 750 N/mm²
P
27
Steel < 900 N/mm²
P
27
wet maximum
 
dry
 

Description

Version:

All countersinks have 3 cutting edges, radially relief ground. Flutes ground from solid.
High-precision countersink, produced to tight manufacturing tolerances similar to DIN 335-C with extra long plain shank.

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