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 |
|---|---|---|---|---|---|---|---|
| HDCS636-2450 | TiN-coated left-hand step solid carbide drill | 1.084 | — | — | — | 150° | View full callout |
| HDCS636-2451 | Black-coated left-hand step solid carbide drill | 1.46 | — | — | — | 118° | View full callout |
| HDCS636-2454 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 160° | View full callout |
| HDCS636-2455 | TiN-coated left-hand step solid carbide drill | 1.185 | — | — | — | 120° | View full callout |
| HDCS636-2459 | TiN-coated left-hand step solid carbide drill | 1.089 | — | — | — | 150° | View full callout |
| HDCS636-2460 | TiN-coated left-hand step solid carbide drill | 1.089 | — | — | — | 118° | View full callout |
| HDCS636-2461 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 118° | View full callout |
| HDCS636-2462 | TiN-coated left-hand step solid carbide drill | 1.285 | — | — | — | 118° | View full callout |
| HDCS636-2463 | Black-coated left-hand step solid carbide drill | 1.46 | — | — | — | 118° | View full callout |
| HDCS636-2464 | TiN-coated left-hand step solid carbide drill | 0.887 | — | — | — | 150° | View full callout |
| HDCS636-2468 | TiN-coated left-hand step solid carbide drill | 1.1 | — | — | — | 135° | View full callout |
| HDCS636-2469 | TiN-coated left-hand step solid carbide drill | 1.25 | — | — | — | 118° | View full callout |
| HDCS636-2470 | Black-coated left-hand step solid carbide drill | 1.085 | — | — | — | 118° | View full callout |
| HDCS636-2472 | TiN-coated left-hand step solid carbide drill | 0.895 | — | — | — | 160° | View full callout |
| HDCS636-2473 | TiN-coated left-hand step solid carbide drill | 0.898 | — | — | — | 160° | View full callout |
| HDCS636-2475 | TiN-coated left-hand step solid carbide drill | 0.9 | — | — | — | 160° | View full callout |
| HDCS636-2477 | Black-coated left-hand step solid carbide drill | 1.3 | — | — | — | 118° | View full callout |
| HDCS636-2481 | TiN-coated left-hand step solid carbide drill | 1.1 | — | — | — | 135° | View full callout |
| HDCS636-2482 | TiN-coated left-hand step solid carbide drill | 0.898 | — | — | — | 160° | View full callout |
| HDCS636-2485 | Black-coated left-hand step solid carbide drill | 1.455 | — | — | — | 118° | View full callout |
| HDCS636-2486 | TiN-coated left-hand step solid carbide drill | 1.09 | — | — | — | 118° | View full callout |
| HDCS636-2498 | TiN-coated left-hand step solid carbide drill | 1.298 | — | — | — | 160° | View full callout |
| HDCS636-2502 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 118° | View full callout |
| HDCS636-2503 | TiN-coated left-hand step solid carbide drill | 1.088 | — | — | — | 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.