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High-precision countersink 90°, uncoated, External ⌀ Dc: 12,4mm

Article no.: 150378 12,4
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External ⌀ Dc (mm) Unit price incl. VAT

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  • 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 ⌀ 12.4 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 2.8 mm
Overall length L 56 mm
Shank ⌀ Ds 8 mm
for countersunk screws DIN 7991 M6
Feed f in stainless steel < 900 N/mm2 0.12 mm/rev.
Shank tolerance h9
Colour ring blue
Pre-drill ⌀ 2.8 mm
Type of product Stepped drill and countersink

Identification & Classification

Article number 150378 12,4
EAN / GTIN 4045197086358
Manufacturer number 150378 12,4
Manufacturer Hoffmann Supply Chain GmbH & Co. KG, Poststraße 15, 90471 Nürnberg, Germany, www.hoffmann-group.com

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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