# M20 — Carbide insert grade cross-reference by ISO application group and manufacturer

For M20, manufacturer is Acera Tool; grade designation(s) is AC2115, recorded from its source on 2026-08-11.

- **ISO application code:** M20 _(verified: appears in the quote below)_
- **Manufacturer:** Acera Tool _(our reading, not quoted from the source)_
- **Grade designation(s):** AC2115 _(verified: appears in the quote below)_

## What the source says

> M20 | AC2115 |

## Source

- https://www.aceratool.com/carbide-insert-grades-chart/

Last verified: 2026-08-11. Review by: 2028-08-10.
Part of [Carbide insert grade cross-reference by ISO application group and manufacturer](https://referencesource.org/carbide-insert-grade-cross-reference/).