Insert cross-reference · Round · 7° clearance · 12mm diameter · 4.76mm thick
RCMT1204 Cross Reference
Equivalent RCMT1204 inserts across 4 brands — Sandvik, ISCAR, Kennametal, Tungaloy. Same ISO 1832 geometry class; grades, coatings and application windows differ by manufacturer. Treat equivalents as starting points and verify on a sample part: a cross-reference matches the geometry, not the process.
A general-purpose nose radius: a balance of edge strength and finish that suits most first-choice turning before you tune up for finishing or down for roughing.
| Brand | Designation / grade | Coating | Application |
|---|---|---|---|
| Sandvik | RCMT 12 04 M0-SM S205 | CVD Al₂O₃ | ISO S (HRSA) |
| ISCAR | RCMT 1204M0-14 IC806 | PVD TiAlN (SUMO TEC®) | S15–S25 |
| Kennametal | RCMT 120400 KCU10B | PVD AlTiN | universal · incl. S |
| Tungaloy | RCMT1204M0-RS AH8015 | PVD AlTiN | ISO S (HRSA) |
Grades used ISCAR IC806 · Kennametal KCU10B · Tungaloy AH8015
15 brands list RCMT1204 in their published standard programs, with 339 catalog variants across chipbreakers, grades and coatings. Variant count shows how deep each maker's standard range goes for this geometry. It is not a quality ranking.
| Brand | Catalog variants |
|---|---|
| Sandvik-Coromant | 71 |
| Walter | 51 |
| Widia | 48 |
| SECO Tools | 41 |
| Sumitomo | 41 |
| Kennametal | 25 |
| Ingersoll | 21 |
| Tungaloy | 10 |
| Iscar | 7 |
| Ceratizit | 6 |
| Mitsubishi Materials | 6 |
| ZCC Cutting Tools | 6 |
| WNT | 3 |
| Hahn+Kolb | 2 |
| Kyocera | 1 |
Hahn+Kolb is a distributor private-label program (ATORN). Counts are catalog listings, not stock levels. Availability varies by region and distributor.
- R — shape
- round
- C — clearance angle
- relief angle 7°
- M — tolerance
- class M — molded, medium tolerance on inscribed circle and corner point (typically ±0.05–0.13 mm depending on size)
- T — type
- fixing hole with countersink, chipbreaker on one face (single-sided positive insert)
- 12 — diameter
- 12 mm insert diameter
- 04 — thickness
- insert thickness 4.76 mm
Type any maker's grade (e.g. GC4325, AC820P, T9215) to see grades other brands publish at the same ISO application position. VERIFIED = multi-source consensus; 2+ CHARTS = placement independently confirmed by two or more manufacturer charts; SINGLE-SOURCE = one chart only. Comparable at ISO position — not identical performance. Verify on a sample part.
Related designations