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 |
|---|---|---|---|---|---|---|---|
| HDCS636-1913 | TiN-coated left-hand step solid carbide drill | 1.285 | — | — | — | 160° | View full callout |
| HDCS636-1916 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 160° | View full callout |
| HDCS636-1917 | TiN-coated left-hand step solid carbide drill | 0.895 | — | — | — | 160° | View full callout |
| HDCS636-1918Repeat order | TiN-coated left-hand step solid carbide drill | 1.096 | — | — | — | 160° | View full callout |
| HDCS636-1920 | Black-coated left-hand step solid carbide drill | 1.296 | — | — | — | 118° | View full callout |
| HDCS636-1921 | TiN-coated left-hand step solid carbide drill | 0.885 | — | — | — | 118° | View full callout |
| HDCS636-1924 | TiN-coated left-hand step solid carbide drill | 0.888 | — | — | — | 150° | View full callout |
| HDCS636-1926 | TiN-coated left-hand step solid carbide drill | 0.897 | — | — | — | 150° | View full callout |
| HDCS636-1931 | TiN-coated left-hand step solid carbide drill | 0.893 | — | — | — | 160° | View full callout |
| HDCS636-1932 | TiN-coated left-hand step solid carbide drill | 0.895 | — | — | — | 160° | View full callout |
| HDCS636-1935 | TiN-coated left-hand step solid carbide drill | 1.09 | — | — | — | 118° | View full callout |
| HDCS636-1937 | TiN-coated left-hand step solid carbide drill | 1.083 | — | — | — | 118° | View full callout |
| HDCS636-1939 | TiN-coated left-hand step solid carbide drill | 1.087 | — | — | — | 118° | View full callout |
| HDCS636-1946 | TiN-coated left-hand step solid carbide drill | 1.09 | — | — | — | 160° | View full callout |
| HDCS636-1948 | TiN-coated left-hand step solid carbide drill | 1.095 | — | — | — | 160° | View full callout |
| HDCS636-1951 | TiN-coated left-hand step solid carbide drill | 1.088 | — | — | — | 118° | View full callout |
| HDCS636-1952 | TiN-coated left-hand step solid carbide drill | 1.086 | — | — | — | 150° | View full callout |
| HDCS636-1953 | TiN-coated left-hand step solid carbide drill | 0.889 | — | — | — | 155° | View full callout |
| HDCS636-1955 | TiN-coated left-hand step solid carbide drill | 0.895 | — | — | — | 160° | View full callout |
| HDCS636-1956 | TiN-coated left-hand step solid carbide drill | 0.893 | — | — | — | 160° | View full callout |
| HDCS636-1957 | TiN-coated left-hand step solid carbide drill | 0.885 | — | — | — | 118° | View full callout |
| HDCS636-1958 | TiN-coated left-hand step solid carbide drill | 1.086 | — | — | — | 160° | View full callout |
| HDCS636-1959 | TiN-coated left-hand step solid carbide drill | 1.295 | — | — | — | 118° | View full callout |
| HDCS636-1960 | TiN-coated left-hand step solid carbide drill | 0.89 | — | — | — | 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.