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 |
|---|---|---|---|---|---|---|---|
| HDCS636-0612 | TiN-coated left-hand step solid carbide drill | 0.612 | — | — | — | 152° | View full callout |
| HDCS636-0615 | TiN-coated left-hand step solid carbide drill | 0.615 | — | — | — | 160° | View full callout |
| HDCS636-0616 | TiN-coated left-hand step solid carbide drill | 0.616 | — | — | — | 160° | View full callout |
| HDCS636-0618 | TiN-coated left-hand step solid carbide drill | 0.618 | — | — | — | 145° | View full callout |
| HDCS636-0619 | TiN-coated left-hand step solid carbide drill | 0.619 | — | — | — | 150° | View full callout |
| HDCS636-0620 | TiN-coated left-hand step solid carbide drill | 0.62 | — | — | — | 150° | View full callout |
| HDCS636-0622 | TiN-coated left-hand step solid carbide drill | 0.622 | — | — | — | 160° | View full callout |
| HDCS636-0623 | TiN-coated left-hand step solid carbide drill | 0.623 | — | — | — | 160° | View full callout |
| HDCS636-0624 | TiN-coated left-hand step solid carbide drill | 0.624 | — | — | — | 160° | View full callout |
| HDCS636-0625 | TiN-coated left-hand step solid carbide drill | 0.625 | — | — | — | 160° | View full callout |
| HDCS636-0626 | TiN-coated left-hand step solid carbide drill | 0.626 | — | — | — | 160° | View full callout |
| HDCS636-0627 | TiN-coated left-hand step solid carbide drill | 0.627 | — | — | — | 155° | View full callout |
| HDCS636-0628 | TiN-coated left-hand step solid carbide drill | 0.628 | — | — | — | 150° | View full callout |
| HDCS636-0629 | TiN-coated left-hand step solid carbide drill | 0.629 | — | — | — | 150° | View full callout |
| HDCS636-0630 | TiN-coated left-hand step solid carbide drill | 0.63 | — | — | — | 150° | View full callout |
| HDCS636-0631 | TiN-coated left-hand step solid carbide drill | 0.631 | — | — | — | 160° | View full callout |
| HDCS636-0632 | TiN-coated left-hand step solid carbide drill | 0.632 | — | — | — | 118° | View full callout |
| HDCS636-0634 | TiN-coated left-hand step solid carbide drill | 0.634 | — | — | — | 150° | View full callout |
| HDCS636-0635 | TiN-coated left-hand step solid carbide drill | 0.635 | — | — | — | 155° | View full callout |
| HDCS636-0636 | TiN-coated left-hand step solid carbide drill | 0.636 | — | — | — | 155° | View full callout |
| HDCS636-0637 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 150° | View full callout |
| HDCS636-0638 | TiN-coated left-hand step solid carbide drill | 0.638 | — | — | — | 118° | View full callout |
| HDCS636-0639 | TiN-coated left-hand step solid carbide drill | 0.639 | — | — | — | 155° | View full callout |
| HDCS636-0640 | TiN-coated left-hand step solid carbide drill | 0.64 | — | — | — | 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.