Carbide Leading Drills
Solid-carbide drill for machining steel, stainless steel, cast iron and hardened steel. OK Premium coated, Ø3–12 mm in 2 mm diameter increments (6 catalogue items). Ships in a single coating option. Part of Okazaki's drilling tool range. Rated for ISO P/M/K/H material classes.
Engineered for performance
Solid-Carbide Substrate, OK Premium Coating
OK Premium coating is standard — no uncoated option — across all 6 catalogue sizes.
Leading (Pilot) Drill Geometry
The catalogue's own "Leading Drill" name designates a combination spotting/centring point with chamfering and V-grooving geometry, not a general straight-flute drill.
Steel, Stainless, Cast-Iron & Hardened-Steel Coverage
Rated for ISO P (steel), M (stainless steel), K (cast iron) and H (hardened steel) material groups.
Ø3–12 mm, 50–110 mm Overall Length
Diameters run Ø3–12 mm in 2 mm increments, with overall lengths from 50 to 110 mm across 6 sizes.
Material applicability
Sizes & part numbers
SDLA 🔍 Click to zoom No sizes match those filters.
Widen a range or clear a field. Need a size not listed? Contact us →
| ORDER NO. | Ø | FLUTE L | OAL | SHANK |
|---|---|---|---|---|
| SDLA030-090 | 3 mm | 8 | 50 | 3 |
| SDLA040-090 | 4 mm | 10 | 60 | 4 |
| SDLA060-090 | 6 mm | 15 | 70 | 6 |
| SDLA080-090 | 8 mm | 20 | 90 | 8 |
| SDLA100-090 | 10 mm | 25 | 100 | 10 |
| SDLA120-090 | 12 mm | 30 | 110 | 12 |
You may also need
Product enquiry
Send us the product, size and quantity you need. Our team will respond with the relevant information.