High-precision countersink, long 90°, uncoated, External ⌀ Dc: 8,3mm

Article no.: 150371 8,3
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External ⌀ Dc (mm) Unit price incl. VAT

Availability

  • Countersink tip angle: 90
  • Schneidstoff: HSS
  • Number of cutting edges Z: 3
  • Standard: Manufacturer’s standard
  • Schaft: Plain shank with h9

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Product details

Technical Data

External ⌀ 8.3 mm
Beschichtung uncoated
Countersink tip angle 90 degrees
Schneidstoff HSS
Number of cutting edges Z 3
Standard Manufacturer’s standard
Schaft Plain shank with h9
Innenkühlung no
smallest countersink ⌀ for holes from 2 mm
Overall length L 105 mm
Shank ⌀ Ds 6 mm
for countersunk screws DIN 7991 M4
Feed f in steel < 500 N/mm2 0.09 mm/rev.
Schafttoleranz h9
Colour ring without
Pre-drill ⌀ 2 mm
Type of product Stepped drill and countersink

Identification & Classification

Article number 150371 8,3
EAN / GTIN 4045197086105
Manufacturer number 150371 8,3
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
20
Steel < 500 N/mm²
P
28
Steel < 750 N/mm²
P
27
Steel < 900 N/mm²
P
27
wet maximum
 
dry
 

Description

Version:

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

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