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 |
|---|---|---|---|---|---|---|---|
| HDCS636-2578 | TiN-coated left-hand step solid carbide drill | 1.455 | — | — | — | 135° | View full callout |
| HDCS636-2579 | TiN-coated left-hand step solid carbide drill | 0.893 | — | — | — | 160° | View full callout |
| HDCS636-2580 | TiN-coated left-hand step solid carbide drill | 0.898 | — | — | — | 160° | View full callout |
| HDCS636-2581 | TiN-coated left-hand step solid carbide drill | 1.095 | — | — | — | 160° | View full callout |
| HDCS636-2584 | TiN-coated left-hand step solid carbide drill | 1.085 | — | — | — | 118° | View full callout |
| HDCS636-2586 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 118° | View full callout |
| HDCS636-2588 | TiN-coated left-hand step solid carbide drill | 0.918 | — | — | — | 120° | View full callout |
| HDCS636-2590 | TiN-coated left-hand step solid carbide drill | 0.896 | — | — | — | 120° | View full callout |
| HDCS636-2592 | TiN-coated left-hand step solid carbide drill | 1.091 | — | — | — | 118° | View full callout |
| HDCS636-2593 | TiN-coated left-hand step solid carbide drill | 1.263 | — | — | — | 118° | View full callout |
| HDCS636-2595 | TiN-coated left-hand step solid carbide drill | 0.8 | — | — | — | 118° | View full callout |
| HDCS636-2596 | TiN-coated left-hand step solid carbide drill | 1.09 | — | — | — | 118° | View full callout |
| HDCS636-2600 | TiN-coated left-hand step solid carbide drill | 0.883 | — | — | — | 150° | View full callout |
| HDCS636-2602 | TiN-coated left-hand step solid carbide drill | 0.875 | — | — | — | 160° | View full callout |
| HDCS636-2603 | TiN-coated left-hand step solid carbide drill | 1.085 | — | — | — | 118° | View full callout |
| HDCS636-2606 | TiN-coated left-hand step solid carbide drill | 0.884 | — | — | — | 160° | View full callout |
| HDCS636-2609 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 118° | View full callout |
| HDCS636-2611 | TiN-coated left-hand step solid carbide drill | 0.883 | — | — | — | 118° | View full callout |
| HDCS636-2619 | TiN-coated left-hand step solid carbide drill | 1.048 | — | — | — | 120° | View full callout |
| HDCS636-2622 | TiN-coated left-hand step solid carbide drill | 1.088 | — | — | — | 120° | View full callout |
| HDCS636-2625 | Black-coated left-hand step solid carbide drill | 1.455 | — | — | — | 118° | View full callout |
| HDCS636-2630 | TiN-coated left-hand step solid carbide drill | 0.902 | — | — | — | 120° | View full callout |
| HDCS636-2634 | Black-coated left-hand step solid carbide drill | 1.3 | — | — | — | 118° | View full callout |
| HDCS636-2635 | TiN-coated left-hand step solid carbide drill | 1.085 | — | — | — | 150° | 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.