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 |
|---|---|---|---|---|---|---|---|
| HDCS636-2639 | TiN-coated left-hand step solid carbide drill | 1.083 | — | — | — | 118° | View full callout |
| HDCS636-2642 | TiN-coated left-hand step solid carbide drill | 1.075 | — | — | — | 120° | View full callout |
| HDCS636-2644 | TiN-coated left-hand step solid carbide drill | 1.085 | — | — | — | 118° | View full callout |
| HDCS636-2645 | TiN-coated left-hand step solid carbide drill | 0.885 | — | — | — | 160° | View full callout |
| HDCS636-2647 | TiN-coated left-hand step solid carbide drill | 1.082 | — | — | — | 150° | View full callout |
| HDCS636-2648 | TiN-coated left-hand step solid carbide drill | 1.086 | — | — | — | 160° | View full callout |
| HDCS636-2650 | TiN-coated left-hand step solid carbide drill | 0.87 | — | — | — | 160° | View full callout |
| HDCS636-2664 | TiN-coated left-hand step solid carbide drill | 0.85 | — | — | — | 118° | View full callout |
| HDCS636-2678 | TiN-coated left-hand step solid carbide drill | 0.913 | — | — | — | 150° | View full callout |
| HDCS636-2688 | TiN-coated left-hand step solid carbide drill | 0.725 | — | — | — | 118° | View full callout |
| HDCS636-2689 | TiN-coated left-hand step solid carbide drill | 0.888 | — | — | — | 120° | View full callout |
| HDCS636-2691 | TiN-coated left-hand step solid carbide drill | 0.876 | — | — | — | 150° | View full callout |
| HDCS636-2692 | TiN-coated left-hand step solid carbide drill | 0.876 | — | — | — | 150° | View full callout |
| HDCS636-2695 | TiN-coated left-hand step solid carbide drill | 0.898 | — | — | — | 118° | View full callout |
| HDCS636-2698 | TiN-coated left-hand step solid carbide drill | 0.887 | — | — | — | 118° | View full callout |
| HDCS636-2700 | TiN-coated left-hand step solid carbide drill | 0.888 | — | — | — | 160° | View full callout |
| HDCS636-2701 | TiN-coated left-hand step solid carbide drill | 1.293 | — | — | — | 118° | View full callout |
| HDCS636-2703 | TiN-coated left-hand step solid carbide drill | 1.095 | — | — | — | 160° | View full callout |
| HDCS636-2705 | TiN-coated left-hand step solid carbide drill | 0.9 | — | — | — | 118° | View full callout |
| HDCS636-2707 | TiN-coated left-hand step solid carbide drill | 1.293 | — | — | — | 118° | View full callout |
| HDCS636-2712 | TiN-coated left-hand step solid carbide drill | 1.093 | — | — | — | 160° | View full callout |
| HDCS636-2713 | TiN-coated left-hand step solid carbide drill | 0.889 | — | — | — | 160° | View full callout |
| HDCS636-2717 | TiN-coated left-hand step solid carbide drill | 0.903 | — | — | — | 160° | View full callout |
| HDCS636-2720 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 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.