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CNC turning: Insert nomenclature details

Written By Ashish Kumar S

|

November 8, 2025

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CNC: Inserts ISO nomenclature – what’s important, and what’s not

To cut metal profitably, there are in fact only 3 parameters that you really need to understand to select the right insert for your application. These are the numbers marked in red in the above example. The others, like the insert shape and cutting edge length, are automatically decided based on the holder that you are using. In the table below, you have to use your brain only in selecting the parameters where there is a brain in the row.

This document has the details of each parameter in the name.

More (actually prior) reading Positive, Negative inserts Insert coatings – simple explanation

Pics. and Text source: CADEM NCyclopedia multimedia CNC training software.

Author

Ashish Kumar S

cadem
Ashish brings strong techno-commercial depth across CNC productivity solutions, CAD/CAM systems, and skill development initiatives. As the face of CADEM’s CNC ecosystem, he drives solution adoption and market growth by aligning advanced manufacturing software with real-world production challenges. A passionate advocate of CNC education in India, he actively engages with customers and students to bridge the gap between industry needs and workforce readiness.

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