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GARANT Master Steel HT high-precision countersink with unequal spacing and 3 drive flats 90°, TiAlN, External ⌀ Dc: 20,5mm

Article no.: 150352 20,5
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External ⌀ Dc (mm) Unit price incl. VAT
  • Countersink tip angle: 90
  • Tool material: HSS E
  • Spacing of the countersink cutting edges: unequal spacing
  • Number of cutting edges Z: 3
  • Standard: DIN 335 C

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Product details

Technical Data

External ⌀ 20.5 mm
Coating TiAlN
Countersink tip angle 90 degrees
Tool material HSS E
Spacing of the countersink cutting edges unequal spacing
Number of cutting edges Z 3
Standard DIN 335 C
Shank Shank with h9 and three drive flats
Through-coolant no
smallest countersink ⌀ for holes from 4.5 mm
Overall length L 63 mm
Shank ⌀ Ds 10 mm
for countersunk screws DIN 7991 M10
Feed f in steel < 1400 N/mm2 0.12 mm/rev.
Colour ring red
Series Master Steel
Type of product Stepped drill and countersink

Identification numbers & Classifications

Article number 150352 20,5
EAN / GTIN 4067263125525
Manufacturer number 150352 20,5

Application Table

Aluminium (short chipping)
N
72
Alu > 10% Si
N
58
Steel < 500 N/mm²
P
42
Steel < 750 N/mm²
P
35
Steel < 900 N/mm²
P
31
Steel < 1100 N/mm²
P
19
Steel < 1400 N/mm²
P
15
TOOLOX 33
H
14
TOOLOX 44
H
13
HARDOX 500 < 1600 N/mm²
H
10
INOX < 900 N/mm²
M
17
INOX > 900 N/mm²
M
13
Ti > 850 N/mm²
S
10
GG(G)
K
29
Oil
 
wet maximum
 
dry
 

Description

Version:

Countersinks with 3 convex unequally spaced cutting edges for chatter-free countersinking and deburring. Robust design and special geometry with variable pitch of the spiral cutting edges for the highest demands – even in difficult-to-machine materials such as Toolox 44 and Hardox 500. Significantly reduced radial and axial forces. Manufactured with narrower production tolerances than specified by DIN335-C.

Advantage:

High self-guidance and stability due to the convex cutting edge geometry. Chatter-free running for excellent results with long tool life at the same time.

Application:

High-precision countersinks for production of exactly round 90° countersunk surfaces in steel, cast iron and materials that are challenging to machine. Exceptionally well suited for use on hand-held power drills and single-pillar drilling machines.

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