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 |
|---|---|---|---|---|---|---|---|
| HDCS636-2505 | TiN-coated left-hand step solid carbide drill | 0.888 | — | — | — | 150° | View full callout |
| HDCS636-2506 | TiN-coated left-hand step solid carbide drill | 0.898 | — | — | — | 160° | View full callout |
| HDCS636-2508 | TiN-coated left-hand step solid carbide drill | 1.515 | — | — | — | 120° | View full callout |
| HDCS636-2509 | TiN-coated left-hand step solid carbide drill | 0.805 | — | — | — | 148° | View full callout |
| HDCS636-2510 | TiN-coated left-hand step solid carbide drill | 1.1 | — | — | — | 135° | View full callout |
| HDCS636-2519 | TiN-coated left-hand step solid carbide drill | 1.455 | — | — | — | 118° | View full callout |
| HDCS636-2522 | Black-coated left-hand step solid carbide drill | 1.296 | — | — | — | 118° | View full callout |
| HDCS636-2524 | TiN-coated left-hand step solid carbide drill | 1.1 | — | — | — | 135° | View full callout |
| HDCS636-2527 | TiN-coated left-hand step solid carbide drill | 1.1 | — | — | — | 120° | View full callout |
| HDCS636-2535 | TiN-coated left-hand step solid carbide drill | 1.091 | — | — | — | 118° | View full callout |
| HDCS636-2541 | Black-coated left-hand step solid carbide drill | 1.087 | — | — | — | 118° | View full callout |
| HDCS636-2546 | TiN-coated left-hand step solid carbide drill | 1.084 | — | — | — | 155° | View full callout |
| HDCS636-2548 | TiN-coated left-hand step solid carbide drill | 1.083 | — | — | — | 150° | View full callout |
| HDCS636-2549 | TiN-coated left-hand step solid carbide drill | 1.19 | — | — | — | 118° | View full callout |
| HDCS636-2556 | TiN-coated left-hand step solid carbide drill | 1.075 | — | — | — | 120° | View full callout |
| HDCS636-2562 | TiN-coated left-hand step solid carbide drill | 0.85 | — | — | — | 118° | View full callout |
| HDCS636-2563 | TiN-coated left-hand step solid carbide drill | 1.092 | — | — | — | 118° | View full callout |
| HDCS636-2565 | TiN-coated left-hand step solid carbide drill | 0.9 | — | — | — | 120° | View full callout |
| HDCS636-2566 | TiN-coated left-hand step solid carbide drill | 0.88 | — | — | — | 155° | View full callout |
| HDCS636-2568 | TiN-coated left-hand step solid carbide drill | 2.113 | — | — | — | 118° | View full callout |
| HDCS636-2570 | TiN-coated left-hand step solid carbide drill | 1.093 | — | — | — | 120° | View full callout |
| HDCS636-2573 | TiN-coated left-hand step solid carbide drill | 1.45 | — | — | — | 150° | View full callout |
| HDCS636-2574 | TiN-coated left-hand step solid carbide drill | 0.905 | — | — | — | 150° | View full callout |
| HDCS636-2576 | TiN-coated left-hand step solid carbide drill | 0.886 | — | — | — | 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.