Turning insert family

CNMG Inserts

Review CNMG geometry and ANSI/ISO codes, starting with the verified CNMG 432 reference.

ISO designation structure

What CNMG Means

CRhombic 80° shape
NNo relief angle
MTolerance class M
GCylindrical clamping hole with chipbreaker on both faces

Code-position meanings follow the cited ISO code-system reference.

CNMG Geometry Summary

The four-letter designation provides geometry and clamping information. The remaining code positions need a source-backed lookup for a specific size record.

Separate geometry from performance

Grade, chipbreaker, coating, and application context are separate from the basic CNMG geometry designation.

Common CNMG Sizes

Verified ANSI and ISO reference
ANSIISOStatus
CNMG 432CNMG120408Verified

Additional sizes, including CNMG 431 and CNMG 433, remain pending until their mappings and dimensions are verified.

Grade, Chipbreaker, and Geometry

A CNMG code identifies the documented insert geometry. Use the manufacturer's product documentation to evaluate grade and chipbreaker for a particular workpiece and cutting condition.

Source records

Official Technical Sources

Open the cited manufacturer or technical record to review the available fields.

  1. YG-1

    Technical source

    Insert ISO Code System

    Defines the first four ISO designation positions as shape, relief angle, tolerance class, and clamping/chipbreaker type.

    Open source
  2. Kennametal

    Technical source

    Kenloc CNMG ISO/ANSI Turning Insert 5596468

    Lists CNMG120408RP / CNMG432RP with 12.7 mm IC, 4.763 mm thickness, 0.8 mm corner radius, and 5.16 mm hole size.

    Open source
  3. YG-1

    Technical source

    CNMG432 Product Data

    Lists CNMG432 with 1/2 in IC, 3/16 in thickness, and 1/32 in corner radius.

    Open source

FAQ

What is the verified CNMG mapping in V1?

CNMG 432 maps to ISO CNMG120408 in the verified local record.

Does CNMG identify the grade?

No. Grade and chipbreaker selection are separate from the basic geometry designation.

Are CNMG 431 and CNMG 433 available?

They are not presented as verified mappings in V1 until supporting technical sources are recorded.