ISO designation structure
What CCMT Means
CCMT identifies a rhombic 80° insert shape, a 7° relief angle, tolerance class M, and a screw hole with chipbreaker on one face.
Positive Clearance Context
The 7° relief-angle position distinguishes CCMT's documented geometry from the no-relief-angle CNMG geometry. This does not by itself determine machining suitability.
Manufacturer example
Kennametal lists CCMT09T304FW with ANSI CCMT3251FW. The family page treats this as a documented example, not as a performance equivalence claim.
Common CCMT Codes
| Search label | Published example | V1 status |
|---|---|---|
| CCMT 32.51 | CCMT09T304FW / CCMT3251FW | Official-source product example |
| CCMT 21.51 | Pending local mapping record | pending |
| CCMT 09T304 | CCMT09T304FW / CCMT3251FW example | Official-source product example |
Cross Reference
Compare a documented code and geometry first. Then validate grade, chipbreaker, coating, workpiece material, machine condition, and cutting parameters for the exact product.
Source records
Official Technical Sources
Open the cited manufacturer or technical record to review the available fields.
Insert ISO Code System
Defines the first four ISO designation positions as shape, relief angle, tolerance class, and clamping/chipbreaker type.
Open sourceScrew-On CCMT ISO/ANSI Turning Insert 4045204
Lists CCMT09T304FW and ANSI CCMT3251FW with dimensional fields.
Open source
FAQ
What clearance angle does the second C identify in CCMT?
The ISO code-system reference identifies C in the relief-angle position as 7° relief.
Does CCMT 09T304 have a published example?
Yes. The listed manufacturer source includes CCMT09T304FW with ANSI CCMT3251FW.
Does the CCMT code determine cutting performance?
No. Geometry alone does not establish grade, chipbreaker, coating, or machining performance.
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