ISO designation structure
What TNMG Means
TNMG identifies a triangular insert shape, no relief angle, tolerance class M, and a cylindrical clamping hole with chipbreaker on both faces.
Geometry Summary
The T position identifies triangular geometry. V1 does not claim a fixed count of usable cutting edges because the final configuration depends on the documented product geometry.
Manufacturer example
Kennametal lists TNMG160408B with ANSI TNMG332. Its published record provides the example's dimensions and does not establish a universal size conversion rule.
Common TNMG Codes
TNMG160408B / TNMG332 is retained as a source-backed manufacturer example. Further TNMG mappings are pending before they become V1 cross-reference results.
Cross Reference
Use a documented geometry and code match as a starting point, then check product-specific grade and chipbreaker information before selecting an insert.
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 sourceKenloc TNMG ISO/ANSI Turning Insert 1160295
Lists TNMG160408B and ANSI TNMG332 with dimensional fields.
Open source
FAQ
What shape is identified by T in TNMG?
The ISO code-system reference identifies T as a triangular shape.
Does TNMG define a universal cutting-edge count?
No. V1 does not make that claim without product-specific source support.
Can I use a TNMG code alone to choose a grade?
No. Grade and chipbreaker decisions require product documentation and operating context.
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