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 |
|---|---|---|---|---|---|---|---|
| CM426-3260-03 | Bronze-coated helical solid carbide reamer | 3.26 | — | — | — | — | View full callout |
| CM426-3300-03-02 | Bronze-coated helical solid carbide reamer | 3.3 | 25 | 4 | 50 | — | Standard |
| CM426-3350-04 | Black-coated solid carbide reamer | 3.35 | — | — | — | 118° | View full callout |
| CM426-3556-04-01 | Black-coated solid carbide reamer | 3.556 | — | — | — | — | View full callout |
| CM426-3600-13-01 | Bronze-coated solid carbide reamer | 3.6 | — | — | — | — | View full callout |
| CM426-3900-04-01 | Black-coated solid carbide reamer | 3.9 | — | — | — | — | View full callout |
| CM426-4000-02 | Black-coated solid carbide reamer | 4 | — | — | — | — | View full callout |
| CM426-4200-04-01 | Black-coated helical solid carbide reamer | 4.2 | — | — | — | — | View full callout |
| CM426-4300-15 | Black-coated solid carbide reamer | 4.3 | — | — | — | — | View full callout |
| CM426-5000-02 | Black-coated solid carbide reamer | 5 | — | — | — | — | View full callout |
| CM426-5030-04-01 | Coated solid carbide reamer | 5.03 | — | — | — | — | View full callout |
| CM426-5040-04 | Black-coated helical solid carbide reamer | 5.04 | — | — | — | — | View full callout |
| CM426-7575-13-01 | Bronze-coated solid carbide reamer | 7.575 | — | — | — | — | View full callout |
| CM426-9560-13-01 | Bronze-coated solid carbide reamer | 9.56 | — | — | — | — | 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.