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 |
|---|---|---|---|---|---|---|---|
| HDCS636-1961 | TiN-coated left-hand step solid carbide drill | 1.28 | — | — | — | 160° | View full callout |
| HDCS636-1962 | TiN-coated left-hand step solid carbide drill | 0.888 | — | — | — | 160° | View full callout |
| HDCS636-1963 | TiN-coated left-hand step solid carbide drill | 1.088 | — | — | — | 160° | View full callout |
| HDCS636-1964 | TiN-coated left-hand step solid carbide drill | 1.693 | — | — | — | 120° | View full callout |
| HDCS636-1967 | TiN-coated left-hand step solid carbide drill | 1.083 | — | — | — | 150° | View full callout |
| HDCS636-1968 | TiN-coated left-hand step solid carbide drill | 1.097 | — | — | — | 148° | View full callout |
| HDCS636-1969 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 160° | View full callout |
| HDCS636-1977 | TiN-coated left-hand step solid carbide drill | 1.295 | — | — | — | 120° | View full callout |
| HDCS636-1978 | Black-coated left-hand step solid carbide drill | 1.296 | — | — | — | 118° | View full callout |
| HDCS636-1979 | Black-coated left-hand step solid carbide drill | 1.293 | — | — | — | 118° | View full callout |
| HDCS636-1981 | TiN-coated left-hand step solid carbide drill | 0.875 | — | — | — | 160° | View full callout |
| HDCS636-1982 | TiN-coated left-hand step solid carbide drill | 0.887 | — | — | — | 118° | View full callout |
| HDCS636-1983 | TiN-coated left-hand step solid carbide drill | 0.897 | — | — | — | 150° | View full callout |
| HDCS636-1984 | TiN-coated left-hand step solid carbide drill | 0.895 | — | — | — | 150° | View full callout |
| HDCS636-1987 | TiN-coated left-hand step solid carbide drill | 0.895 | — | — | — | 160° | View full callout |
| HDCS636-1993 | TiN-coated left-hand step solid carbide drill | 1.1 | — | — | — | 148° | View full callout |
| HDCS636-1996 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 160° | View full callout |
| HDCS636-2000 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 120° | View full callout |
| HDCS636-2004 | TiN-coated left-hand step solid carbide drill | 0.883 | — | — | — | 155° | View full callout |
| HDCS636-2007 | TiN-coated left-hand step solid carbide drill | 1.086 | — | — | — | 150° | View full callout |
| HDCS636-2008 | TiN-coated left-hand step solid carbide drill | 0.887 | — | — | — | 150° | View full callout |
| HDCS636-2009 | TiN-coated left-hand step solid carbide drill | 0.887 | — | — | — | 118° | View full callout |
| HDCS636-2010 | TiN-coated left-hand step solid carbide drill | 1.295 | — | — | — | 120° | View full callout |
| HDCS636-2011 | TiN-coated left-hand step solid carbide drill | 1.88 | — | — | — | 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.