HSS flat countersink, DIN 373 medium

HSS flat countersink with guide pin DIN 373 dia. 8.0 mm shank dia. 5 mm medium for through hole

Item number: 25203108
EAN: 4007220169087
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Technical information

HSS flat countersink with guide pin DIN 373 dia. 8.0 mm shank dia. 5 mm medium for through hole


Dia.
8 mm
Dia. ball bearing
4.5 mm
Dia. shank
5 mm
Length, total
71 mm
RPM from, grey cast iron, white cast iron
400 RPM
RPM from, hard non-ferrous metals
600 RPM
RPM from, rust and acid-resistant steels
400 RPM
RPM from, soft non-ferrous metals
600 RPM
RPM from, steels over 700 N/mm²
400 RPM
RPM from, steels up to 700 N/mm²
400 RPM
RPM from, thermoplastics, fibre-reinforced plastics (GRP/CRP)
400 RPM
RPM to, grey cast iron, white cast iron
400 RPM
RPM to, hard non-ferrous metals
800 RPM
RPM to, rust and acid-resistant steels
600 RPM
RPM to, soft non-ferrous metals
800 RPM
RPM to, steels over 700 N/mm²
600 RPM
RPM to, steels up to 700 N/mm²
800 RPM
RPM to, thermoplastics, fibre-reinforced plastics (GRP/CRP)
600 RPM
Version
M
Packaging unit
1 Piece
Description

High-performance flat countersinks made from HSS according to DIN 373 for countersinking cylinder head and hexagon screws as well as nuts. Flat countersinks have a cylindrical design. The cylindrical pin in the relevant quality grades of fine, medium or tapping hole ensures coaxial alignment of the countersink to the bore.

High-performance countersink tools for through holes with the quality grade medium (M) according to ISO 273.

Advantages
  • Very high stock removal rate.
  • Optimum chip removal.
  • Burr-free results.
  • Long tool life.
  • Smooth operation.
  • Good surface quality.
Recommendations for use
  • Please observe the recommended rotational speeds.
  • Flat countersinks with the quality grade "medium" are suitable for producing flat countersinks at through holes or blind holes in the tolerance range "medium" with extended mounting accuracy.
Materials that can be worked
Aluminium
Annealed cast iron
Black annealed cast iron (GTS, GJMB)
Brass
Bronze
Case-hardened steels
Cast iron
Chipboard
Copper
Elastomers
Fibre-reinforced thermosetting plastics (GRP, CRP)
Fibre-reinforced thermosetting plastics (GRP, CRP) with a fibre content > 40 %
Fibre-reinforced thermosetting plastics (GRP, CRP) with a fibre content ≤ 40 %
Grey/nodular cast iron (GG/GJL, GGG/GJS)
Hard aluminium alloys
Hard non-ferrous metal
Hardwood
Other
Other non-ferrous metals
Plastics
Roller-bearing and ball-bearing steels
Soft aluminium alloys
Soft non-ferrous metal
Soft titanium alloys (tensile strength 500 N/mm²)
Soft wood
Stainless steel (INOX)
Steel
Steel, cast steel
Steels over 700 N/mm² (> 220 HB)
Steels up to 1,200 N/mm² (< 38 HRC)
Steels up to 700 N/mm² (< 220 HB)
Thermoplastics
Thermosetting plastics
Titanium
Titanium alloys
Tool steels
Tough aluminium alloys
White annealed cast iron (GTW, GJMW)
Wood
Zinc
Applications
Countersinking
Drive types
Column drill
Power drill
Robot
Stationary machines
Tool machine
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