High-precision countersink 90°, uncoated, External ⌀ Dc: 20,5mm

Article no.: 150378 20,5
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External ⌀ Dc (mm) Unit price incl. VAT
  • Countersink tip angle: 90
  • Tool material: HSS E
  • Number of cutting edges Z: 3
  • Standard: DIN 335 C
  • Shank: Plain shank with h9

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Product details

Technical Data

External ⌀ 20.5 mm
Coating uncoated
Countersink tip angle 90 degrees
Tool material HSS E
Number of cutting edges Z 3
Standard DIN 335 C
Shank Plain shank with h9
Through-coolant no
smallest countersink ⌀ for holes from 3.5 mm
Overall length L 63 mm
Shank ⌀ Ds 10 mm
for countersunk screws DIN 7991 M10
Feed f in stainless steel < 900 N/mm2 0.16 mm/rev.
Shank tolerance h9
Colour ring blue
Pre-drill ⌀ 3.5 mm
Type of product Stepped drill and countersink

Identification numbers & Classifications

Article number 150378 20,5
EAN / GTIN 4045197086396
Manufacturer number 150378 20,5

Application Table

Alu plastics
N
70
Aluminium (short chipping)
N
33
Alu > 10% Si
N
25
Steel < 500 N/mm²
P
28
Steel < 750 N/mm²
P
27
Steel < 900 N/mm²
P
27
Steel < 1100 N/mm²
P
8
Steel < 1400 N/mm²
P
4
INOX < 900 N/mm²
M
7
INOX > 900 N/mm²
M
7
Ti > 850 N/mm²
S
7
GG(G)
K
12
CuZn
N
65
wet minimum
 
dry
 

Description

Version:

All countersinks have 3 cutting edges, radially relieved.
Flutes are ground from solid.
High-precision countersink, produced with tight manufacturing tolerances similar to DIN 335-C.

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