WNMU inserts
80° trigon milling insert. We make 4 WNMU sizes, from WNMU040304 to WNMU090720. Grade, coating and chipbreaker are matched to your material and operation.
What WNMU means
The first four letters of an ISO 1832 designation give the shape, the clearance angle, the tolerance class, and the hole and chipbreaker.
| Code | Feature | Meaning |
|---|---|---|
| W | Shape | 80° trigon |
| N | Clearance angle | 0° (negative insert) |
| M | Tolerance class | Class M |
| U | Hole and chipbreaker | Hole countersunk on both sides, chipbreaker on both faces |
Where WNMU inserts are used
Trigon milling inserts have three 80° corners per face and are used in shoulder and face milling cutters.
WNMU is a negative 80° trigon milling insert. It has a countersunk hole for a clamping screw. It has a chipbreaker on both faces. It can be turned over, so both faces are used: twice the corners of a one-sided insert.
Use the insert format, size and corner configuration specified by the cutter manufacturer; check the pocket and clamping system before ordering.
Questions
- What does WNMU mean?
- It is an ISO 1832 code. W = Shape: 80° trigon; N = Clearance angle: 0° (negative insert); M = Tolerance class: Class M; U = Hole and chipbreaker: Hole countersunk on both sides, chipbreaker on both faces.
- Which WNMU sizes do you make?
- 4 sizes, from WNMU040304 to WNMU090720. Grade, coating and chipbreaker are confirmed with each quotation.
- How do I read WNMU040304?
- WNMU = format; 04 = Cutting edge length code (about 4 mm); 04 = Corner (0.4 mm nominal).
Related formats
Guides: CNMG vs WNMG vs DNMG vs TNMG · ISO material groups · Inserts for stainless steel
Start with the details you already have.
Tell us about the material, feature and current challenge. Your enquiry is saved securely and sent to our team for follow-up.
- No account required
- Your enquiry is saved for follow-up
- Our team receives an email notification