INDEXABLE INSERTS
TNMA Turning Inserts
Compare TNMA parent models by material and application before choosing a brand.
TNMA HADSTO, Achteck
TNMA 160404
TNMA 160404 indexable turning inserts. 3 available options.
TNMA HADSTO, Achteck
TNMA 160408
TNMA 160408 indexable turning inserts. 4 available options.
TNMA HADSTO, Achteck
TNMA 160412
TNMA 160412 indexable turning inserts. 4 available options.
TNMA HADSTO, Achteck
TNMA 220408
TNMA 220408 indexable turning inserts. 4 available options.
TNMA HADSTO, Achteck
TNMA 220412
TNMA 220412 indexable turning inserts. 4 available options.
TNMA HADSTO, Achteck
TNMA 220416
TNMA 220416 indexable turning inserts. 3 available options.
No matching parent models.
TNMA covers 7 insert sizes in a triangular 60° shape giving six cutting edges — the lowest cost per edge, at the price of a weaker tip. We stock 25 variants across the family from Achteck, HADSTO, published for Cast iron.
Sizes in this family
Every TNMA size we carry, with the measured geometry and how many variants are in stock. Open a size for the full cutting data and grade list.
| Size | IC (mm) | Thickness (mm) | Nose radius (mm) | Variants | Material groups |
|---|---|---|---|---|---|
| TNMA 160408 | 9.53 | 4.76 | 0.8 | 4 | K |
| TNMA 160412 | 9.53 | 4.76 | 1.2 | 4 | K |
| TNMA 220408 | 12.7 | 4.76 | 0.8 | 4 | K |
| TNMA 220412 | 12.7 | 4.76 | 1.2–2.2 | 4 | K |
| TNMA 160404 | 9.53 | 4.76 | 0.4 | 3 | K |
| TNMA 160416 | 9.53 | 4.76 | 1.6 | 3 | K |
| TNMA 220416 | 12.7 | 4.76 | 1.6 | 3 | K |
Grades stocked in this family
AC102K, AC202K, HS6120, AC100K.
The family is published for Cast iron. Pick the grade from the group you are cutting — how to read grade names.
Chipbreaker geometries
KD5. The chipbreaker defines the feed window — chipbreaker selection guide.
Typical operations
- Roughing
- Medium
Which size do you need?
- Inscribed circle sets the maximum depth of cut. As a rule keep ap under about two thirds of the IC.
- Nose radius trades finish against strength. A larger radius gives better surface finish at the same feed and a stronger edge, but raises cutting force and cannot produce tight internal corners.
- Check the holder. The holder designation must carry the same shape letter and the same size digit as the insert.