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 |
|---|---|---|---|---|---|---|---|
| HDCS636-0642 | TiN-coated left-hand step solid carbide drill | 0.642 | — | — | — | 120° | View full callout |
| HDCS636-0643 | TiN-coated left-hand step solid carbide drill | 0.643 | — | — | — | 120° | View full callout |
| HDCS636-0644 | TiN-coated left-hand step solid carbide drill | 0.644 | — | — | — | 120° | View full callout |
| HDCS636-0645 | TiN-coated left-hand step solid carbide drill | 0.645 | — | — | — | 120° | View full callout |
| HDCS636-0647 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 150° | View full callout |
| HDCS636-0648 | TiN-coated left-hand step solid carbide drill | 0.887 | — | — | — | 150° | View full callout |
| HDCS636-0649 | TiN-coated left-hand step solid carbide drill | 1.092 | — | — | — | 160° | View full callout |
| HDCS636-0650 | TiN-coated left-hand step solid carbide drill | 0.65 | — | — | — | 160° | View full callout |
| HDCS636-0651 | TiN-coated left-hand step solid carbide drill | 0.651 | — | — | — | 160° | View full callout |
| HDCS636-0653 | TiN-coated left-hand step solid carbide drill | 0.653 | — | — | — | 155° | View full callout |
| HDCS636-0654 | TiN-coated left-hand step solid carbide drill | 0.88 | — | — | — | 118° | View full callout |
| HDCS636-0655 | TiN-coated left-hand step solid carbide drill | 0.879 | — | — | — | 118° | View full callout |
| HDCS636-0658 | TiN-coated left-hand step solid carbide drill | 0.887 | — | — | — | 150° | View full callout |
| HDCS636-0662 | TiN-coated left-hand step solid carbide drill | 0.662 | — | — | — | 150° | View full callout |
| HDCS636-0663 | TiN-coated left-hand step solid carbide drill | 0.883 | — | — | — | 118° | View full callout |
| HDCS636-0665 | TiN-coated left-hand step solid carbide drill | 0.665 | — | — | — | 150° | View full callout |
| HDCS636-0666 | TiN-coated left-hand step solid carbide drill | 0.666 | — | — | — | 150° | View full callout |
| HDCS636-0667 | TiN-coated left-hand step solid carbide drill | 0.667 | — | — | — | 118° | View full callout |
| HDCS636-0669 | TiN-coated left-hand step solid carbide drill | 0.669 | — | — | — | 120° | View full callout |
| HDCS636-0671 | TiN-coated left-hand step solid carbide drill | 0.671 | — | — | — | 150° | View full callout |
| HDCS636-0676 | TiN-coated left-hand step solid carbide drill | 0.676 | — | — | — | 118° | View full callout |
| HDCS636-0677 | TiN-coated left-hand step solid carbide drill | 0.677 | — | — | — | 120° | View full callout |
| HDCS636-0678 | TiN-coated left-hand step solid carbide drill | 0.678 | — | — | — | 150° | View full callout |
| HDCS636-0680 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 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.