For process engineers
The table is a production record, not a sales range.
CM426 — Black-coated helical solid carbide reamer
A real production series with 158 standard part numbers. The table below is taken from the geometry we have actually ground and shipped.

- Part numbers in series
- 158
- Diameter span
- 0.14–9.56 mm
- Coating
- Black
What the catalogue commits to
Production capability
Min. diameter 0.15 mm
Typical application
Helical reaming to finished hole tolerance.
Part numbers in CM426
158 part numbersFilter this series further
| Part no. | Description | D1 mm | Flute mm | Shank mm | OAL mm | Point | Geometry |
|---|---|---|---|---|---|---|---|
| CM426-2265-13-01 | Bronze-coated solid carbide reamer | 2.265 | — | — | — | — | View full callout |
| CM426-2500-04-01 | Black-coated solid carbide reamer | 2.5 | — | — | — | 60° | View full callout |
| CM426-2500-04-02 | Black-coated solid carbide reamer | 2.5 | — | — | — | 70° | View full callout |
| CM426-2550-13-01 | Bronze-coated solid carbide reamer | 2.55 | — | — | — | — | View full callout |
| CM426-2580-06-01 | DLC-coated helical solid carbide reamer | 2.58 | — | — | — | — | View full callout |
| CM426-2600-03-01 | Bronze-coated solid carbide reamer | 2.6 | — | — | — | — | View full callout |
| CM426-2600-04-01 | Black-coated helical solid carbide reamer | 2.6 | — | — | — | — | View full callout |
| CM426-2800-03 | Bronze-coated solid carbide reamer | 2.8 | — | — | — | — | View full callout |
| CM426-2850-03 | Bronze-coated step helical solid carbide reamer | 2.85 | — | — | — | — | View full callout |
| CM426-2900-04 | Black-coated helical solid carbide reamer | 2.9 | — | — | — | — | View full callout |
| CM426-2950-13-01 | Bronze-coated solid carbide reamer | 2.95 | — | — | — | 118° | View full callout |
| CM426-2970-08-01 | Coated helical solid carbide reamer | 2.97 | — | — | — | — | View full callout |
| CM426-3000-02 | Black-coated helical solid carbide reamer | 6 | — | — | — | — | View full callout |
| CM426-3000-02-01 | Black-coated solid carbide reamer | 3 | — | — | — | — | View full callout |
| CM426-3000-03-01 | Bronze-coated solid carbide reamer | 3 | — | — | — | — | View full callout |
| CM426-3000-03-03 | Bronze-coated helical solid carbide reamer | 3 | — | — | — | — | View full callout |
| CM426-3000-04-01 | Black-coated helical solid carbide reamer | 3 | — | — | — | 90° | View full callout |
| CM426-3000-04-02 | Black-coated helical solid carbide reamer | 3 | — | — | — | — | View full callout |
| CM426-3000-04-03 | Black-coated solid carbide reamer | 3 | — | — | — | — | View full callout |
| CM426-3000-04-04 | Black-coated helical solid carbide reamer | 3 | — | — | — | — | View full callout |
| CM426-3000-04-05 | Black-coated solid carbide reamer | 3 | — | — | — | — | View full callout |
| CM426-3010-04-01 | Black-coated helical solid carbide reamer | 3.01 | — | — | — | — | View full callout |
| CM426-3010-04-02 | Black-coated helical solid carbide reamer | 3.01 | — | — | — | — | View full callout |
| CM426-3190-20 | Bronze-coated solid carbide reamer | 3.19 | — | — | — | — | View full callout |
How to read a part number. The prefix is the series, the four digits after the first dash encode the cutting diameter in thousandths of a millimetre (for example 1000 is 1.000 mm), and any trailing digits identify the flute or variant. The full geometry is written as D1 × flute length × shank × overall length.