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 |
|---|---|---|---|---|---|---|---|
| CM426-1240-20Repeat order | Bronze-coated helical solid carbide reamer | 1.24 | — | — | — | — | View full callout |
| CM426-1250-02Repeat order | Black-coated helical solid carbide reamer | 1.25 | 2.55 | 4 | 50 | — | Standard |
| CM426-1250-02-01 | Black-coated helical solid carbide reamer | 1.25 | — | — | — | — | View full callout |
| CM426-1250-02-02 | Black-coated helical solid carbide reamer | 1.25 | — | — | — | — | View full callout |
| CM426-1300-20 | Bronze-coated step solid carbide reamer | 1.3 | — | — | — | — | View full callout |
| CM426-1370-02 | Black-coated helical solid carbide reamer | 1.37 | — | — | — | — | View full callout |
| CM426-1370-04-01 | Black-coated helical solid carbide reamer | 1.37 | — | — | — | — | View full callout |
| CM426-1390-04-01 | Black-coated helical solid carbide reamer | 1.39 | — | — | — | — | View full callout |
| CM426-1400-20 | Bronze-coated solid carbide reamer | 2.17 | — | — | — | 30° | View full callout |
| CM426-1500-02 | Black-coated helical solid carbide reamer | 1.5 | — | — | — | — | View full callout |
| CM426-1500-03-01 | Coated step solid carbide reamer | 1.5 | — | — | — | — | View full callout |
| CM426-1500-04-01 | Black-coated solid carbide reamer | 1.5 | — | — | — | — | View full callout |
| CM426-1500-04-02 | Black-coated solid carbide reamer | 1.5 | — | — | — | — | View full callout |
| CM426-1500-04-03 | Black-coated helical solid carbide reamer | 1.5 | — | — | — | — | View full callout |
| CM426-1540-03-01 | Bronze-coated helical solid carbide reamer | 1.54 | — | — | — | — | View full callout |
| CM426-1585-04-01 | Black-coated helical solid carbide reamer | 1.585 | — | — | — | — | View full callout |
| CM426-1589-04-01 | Coated helical solid carbide reamer | 1.589 | — | — | — | — | View full callout |
| CM426-1590-04 | Black-coated solid carbide reamer | 1.59 | — | — | — | — | View full callout |
| CM426-1600-04 | Black-coated solid carbide reamer | 1.6 | — | — | — | — | View full callout |
| CM426-1600-04-01 | Black-coated solid carbide reamer | 1.6 | — | — | — | — | View full callout |
| CM426-1600-04-02 | Black-coated step solid carbide reamer | 1.6 | — | — | — | 140° | View full callout |
| CM426-1610-04-01 | Black-coated helical solid carbide reamer | 1.61 | 6.5 | 4 | 50 | 90° | Standard |
| CM426-1620-06 | Coated step solid carbide reamer | 1.62 | — | — | — | — | View full callout |
| CM426-1650-04-01 | Black-coated helical solid carbide reamer | 1.65 | — | — | — | — | 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.