For process engineers
The table is a production record, not a sales range.
HDCS636 — TiN-coated left-hand step solid carbide drill
A real production series with 1508 standard part numbers. The table below is taken from the geometry we have actually ground and shipped.

- Part numbers in series
- 1,508
- Diameter span
- 0.433–3 mm
- Coating
- TiN
What the catalogue commits to
Production capability
Min. diameter 0.15 mm
Typical application
Non-standard step drilling for stepped and counterbored holes.
Part numbers in HDCS636
1,508 part numbersFilter this series further
| Part no. | Description | D1 mm | Flute mm | Shank mm | OAL mm | Point | Geometry |
|---|---|---|---|---|---|---|---|
| HDCS636-1851 | TiN-coated left-hand step solid carbide drill | 1.285 | — | — | — | 150° | View full callout |
| HDCS636-1855 | TiN-coated left-hand step solid carbide drill | 1.093 | — | — | — | 155° | View full callout |
| HDCS636-1857 | TiN-coated left-hand step solid carbide drill | 1.088 | — | — | — | 118° | View full callout |
| HDCS636-1860 | TiN-coated left-hand step solid carbide drill | 1.082 | — | — | — | 150° | View full callout |
| HDCS636-1861 | TiN-coated left-hand step solid carbide drill | 1.085 | — | — | — | 150° | View full callout |
| HDCS636-1862 | TiN-coated left-hand step solid carbide drill | 1.086 | — | — | — | 150° | View full callout |
| HDCS636-1864 | TiN-coated left-hand step solid carbide drill | 2.23 | — | — | — | 118° | View full callout |
| HDCS636-1865 | TiN-coated left-hand step solid carbide drill | 0.923 | — | — | — | 118° | View full callout |
| HDCS636-1866 | TiN-coated left-hand step solid carbide drill | 0.918 | — | — | — | 118° | View full callout |
| HDCS636-1869 | TiN-coated left-hand step solid carbide drill | 0.885 | — | — | — | 150° | View full callout |
| HDCS636-1871 | TiN-coated left-hand step solid carbide drill | 0.888 | — | — | — | 155° | View full callout |
| HDCS636-1872 | TiN-coated left-hand step solid carbide drill | 1.095 | — | — | — | 160° | View full callout |
| HDCS636-1873 | TiN-coated left-hand step solid carbide drill | 1.45 | — | — | — | 118° | View full callout |
| HDCS636-1886 | TiN-coated left-hand step solid carbide drill | 1.085 | — | — | — | 160° | View full callout |
| HDCS636-1887 | TiN-coated left-hand step solid carbide drill | 1.29 | — | — | — | 118° | View full callout |
| HDCS636-1897 | TiN-coated left-hand step solid carbide drill | 1.098 | — | — | — | 160° | View full callout |
| HDCS636-1898 | TiN-coated left-hand step solid carbide drill | 1.09 | — | — | — | 118° | View full callout |
| HDCS636-1900 | TiN-coated left-hand step solid carbide drill | 1.287 | — | — | — | 118° | View full callout |
| HDCS636-1901 | TiN-coated left-hand step solid carbide drill | 1.285 | — | — | — | 118° | View full callout |
| HDCS636-1902 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 152° | View full callout |
| HDCS636-1906 | TiN-coated left-hand step solid carbide drill | 0.876 | — | — | — | 150° | View full callout |
| HDCS636-1908 | TiN-coated left-hand step solid carbide drill | 0.888 | — | — | — | 150° | View full callout |
| HDCS636-1910 | TiN-coated left-hand step solid carbide drill | 1.285 | — | — | — | 160° | View full callout |
| HDCS636-1912 | TiN-coated left-hand step solid carbide drill | 1.09 | — | — | — | 160° | 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.