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A versatile cutter which can be used for many types of grooves, threads and chamfers; machining of eccentric components e.g. gearbox casings, and high volume assemblies, mainly on machining centres and rotating units on lathes.



  • Inserts mounted in pockets for safe and stable mounting
  • Economical insert with three edges
  • Large programme of inserts covering circlips, slots, threads, etc.
  • Low cutting forces
  • Sharp precision-ground insert
  • Different thread pitches possible with one tool
  • Excellent for both internal and external machining



  • Comes in four tool holder sizes with the same insert size
  • Sharp cutting edges for high quality grooves without burr
  • One grade; PVD coated GC1025 for all materials
  • Multiple edges for economic machining



  • Thread milling
  • Grooving
  • Circlip grooving for holes over diameter 39 mm (1.535 inch)
ISO application area









When programming with tool centre feed, the periphery feed can be far too high. Make sure to program with radius compensation to ensure the correct feed.


Product Range 

  • Inserts for both circlip and chamfering in one operation, widths 1.1–5.15 mm.
  • Circlip inserts, widths 1.30-5.15 mm
  • 2-8 inserts, each with three indexable cutting edges for high productivity and economy
  • With Weldon (B), arbor (Q) and bore with keyway mounting (S)


Grooving and circlip

​Circlip grooves
with chamfer


Pitch 1.5–6 mm (16-4 t.p.i)
Partial profile 60° V-profile
Metric 60° (full profile) UN 60° 
Other profiles can be offered as specials, please contact your Sandvik Coromant representative. ​ ​


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