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 |
|---|---|---|---|---|---|---|---|
| HDCS636-0400 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 155° | View full callout |
| HDCS636-0401 | TiN-coated left-hand step solid carbide drill | 0.893 | — | — | — | 155° | View full callout |
| HDCS636-0402 | TiN-coated left-hand step solid carbide drill | 0.894 | — | — | — | 155° | View full callout |
| HDCS636-0403 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 155° | View full callout |
| HDCS636-0404 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 155° | View full callout |
| HDCS636-0405 | TiN-coated left-hand step solid carbide drill | 0.888 | — | — | — | 155° | View full callout |
| HDCS636-0416 | TiN-coated left-hand step solid carbide drill | 0.905 | — | — | — | 118° | View full callout |
| HDCS636-0417 | TiN-coated left-hand step solid carbide drill | 0.895 | — | — | — | 118° | View full callout |
| HDCS636-0419 | TiN-coated left-hand step solid carbide drill | 1.095 | — | — | — | 160° | View full callout |
| HDCS636-0421 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 160° | View full callout |
| HDCS636-0422 | TiN-coated left-hand step solid carbide drill | 1.09 | — | — | — | 160° | View full callout |
| HDCS636-0423 | TiN-coated left-hand step solid carbide drill | 0.915 | — | — | — | 118° | View full callout |
| HDCS636-0424 | TiN-coated left-hand step solid carbide drill | 0.913 | — | — | — | 118° | View full callout |
| HDCS636-0425 | TiN-coated left-hand step solid carbide drill | 0.892 | — | — | — | 118° | View full callout |
| HDCS636-0427 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 160° | View full callout |
| HDCS636-0428 | TiN-coated left-hand step solid carbide drill | 0.884 | — | — | — | 160° | View full callout |
| HDCS636-0432 | TiN-coated left-hand step solid carbide drill | 1.09 | — | — | — | 118° | View full callout |
| HDCS636-0433 | TiN-coated left-hand step solid carbide drill | 0.433 | — | — | — | 45° | View full callout |
| HDCS636-0434 | TiN-coated left-hand step solid carbide drill | 0.434 | — | — | — | 118° | View full callout |
| HDCS636-0435 | TiN-coated left-hand step solid carbide drill | 0.435 | — | — | — | 150° | View full callout |
| HDCS636-0436 | TiN-coated left-hand step solid carbide drill | 0.436 | — | — | — | 118° | View full callout |
| HDCS636-0438 | TiN-coated left-hand step solid carbide drill | 0.438 | — | — | — | 155° | View full callout |
| HDCS636-0440 | TiN-coated left-hand step solid carbide drill | 0.44 | — | — | — | 150° | View full callout |
| HDCS636-0442 | TiN-coated left-hand step solid carbide drill | 0.87 | — | — | — | 120° | 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.