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Solid carbide stub stepped drill 90° M3

Article no.: 125050 M3
  • Tool material: Solid carbide
  • Standard: DIN 8378
  • Type: N
  • Tolerance nominal ⌀: h8
  • No. of teeth Z: 2

Product details

Technical Data

for threads M3
Coating TiAlN
Tool material Solid carbide
Standard DIN 8378
Type N
Tolerance nominal ⌀ h8
No. of teeth Z 2
Point angle 140 degrees
Shank DIN 6535 HA to h6
Countersink angle 90 degrees
Through-coolant no
⌀ D1 1st step with chamfer h8 2.5 mm
⌀ D2 2nd step with chamfer h8 3.4 mm
Step height L1 1st step 8.8 mm
Flute length Lc 20 mm
Overall length L 62 mm
Shank ⌀ Ds 6 mm
Feed f in steel < 1100 N/mm2 0.08 mm/rev.
Shank tolerance h6
Colour ring without
Application for type of drilling for blind hole and through hole
Type of product Stepped drill

Identification numbers & Classifications

Article number 125050 M3
EAN / GTIN 4045197064875

Application Table

Alu plastics
N
260
Aluminium (short chipping)
N
180
Alu > 10% Si
N
180
Steel < 500 N/mm²
P
90
Steel < 750 N/mm²
P
90
Steel < 900 N/mm²
P
90
Steel < 1100 N/mm²
P
60
Steel < 1400 N/mm²
P
35
INOX < 900 N/mm²
M
35
INOX > 900 N/mm²
M
30
Ti > 850 N/mm²
S
25
GG(G)
K
110
CuZn
N
180
Uni
 
wet maximum
 
dry
 

Description

Version:

Very sturdy − step length to DIN 8378. Tight concentricity tolerances between drill and counterbore ⌀ guarantee exact alignment.

Application:

Particularly suitable for NC machines and automatic machines. For drilling tapping holes to DIN 336 sheet 1 with 90° countersinking. In the following operation, the tap therefore does not have to cut into the sharp edge of the hole.
Sizes F: Tapping holes for the following fluteless taps.

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