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 |
|---|---|---|---|---|---|---|---|
| HDCS636-2728 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 118° | View full callout |
| HDCS636-2730 | TiN-coated left-hand step solid carbide drill | 1.083 | — | — | — | 118° | View full callout |
| HDCS636-2731 | TiN-coated left-hand step solid carbide drill | 1.483 | — | — | — | 120° | View full callout |
| HDCS636-2734 | TiN-coated left-hand step solid carbide drill | 1.293 | — | — | — | 118° | View full callout |
| HDCS636-2736 | TiN-coated left-hand step solid carbide drill | 1.08 | — | — | — | 118° | View full callout |
| HDCS636-2739 | TiN-coated left-hand step solid carbide drill | 0.893 | — | — | — | 150° | View full callout |
| HDCS636-2741 | Black-coated left-hand step solid carbide drill | 1.087 | — | — | — | 118° | View full callout |
| HDCS636-2742 | TiN-coated left-hand step solid carbide drill | 1.085 | — | — | — | 155° | View full callout |
| HDCS636-2747 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 118° | View full callout |
| HDCS636-2748 | TiN-coated left-hand step solid carbide drill | 0.893 | — | — | — | 118° | View full callout |
| HDCS636-2749 | TiN-coated left-hand step solid carbide drill | 1.293 | — | — | — | 118° | View full callout |
| HDCS636-2752 | TiN-coated left-hand step solid carbide drill | 1.095 | — | — | — | 118° | View full callout |
| HDCS636-2754 | TiN-coated left-hand step solid carbide drill | 0.87 | — | — | — | 160° | View full callout |
| HDCS636-2755 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 118° | View full callout |
| HDCS636-2758 | TiN-coated left-hand step solid carbide drill | 1.455 | — | — | — | 118° | View full callout |
| HDCS636-2759 | TiN-coated left-hand step solid carbide drill | 2.203 | — | — | — | 120° | View full callout |
| HDCS636-2766 | TiN-coated left-hand step solid carbide drill | 1.296 | — | — | — | 118° | View full callout |
| HDCS636-2769 | TiN-coated left-hand step solid carbide drill | 1.295 | — | — | — | 118° | View full callout |
| HDCS636-2774 | TiN-coated left-hand step solid carbide drill | 0.895 | — | — | — | 148° | View full callout |
| HDCS636-2782 | TiN-coated left-hand step solid carbide drill | 1.27 | — | — | — | 118° | 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.