Description
RRP: $269.50
Condition
New Old Stock (NOS).
This is a rare, vintage set of Sandvik Coromant “Hard Cut” drills. The set is brand new and unused, preserved in its original manufacturer packaging. As “New Old Stock,” the packaging may show some signs of shelf wear or aging consistent with long-term storage (the release date for this series dates back to the early 80s), but the tools themselves are pristine and ready for use.
Product Overview
The Sandvik Coromant HC 23456 is a specialised Hard Cut Drill Set designed for the most difficult drilling tasks in the workshop. The product code “23456” is a direct reference to the sizes included: 2mm, 3mm, 4mm, 5mm, and 6mm.

These drills are engineered specifically for machining hardened steel and, most notably, for drilling out broken taps or bolts. They feature a robust geometry with a 120° point angle and a 0° orthogonal rake angle, which provides the extreme edge strength required to cut through materials that would instantly destroy a standard HSS or Cobalt drill.
Brand Information
Sandvik Coromant is the world’s leading supplier of tools and know-how to the metalworking industry. This “Hard Cut” series is a classic example of their problem-solving engineering—tools designed not for general production, but to save the day when a part is hardened or a tap has snapped off in a critical component.
Specifications
| Feature | Specification |
| Model | HC 23456 (Set) |
| Material ID | 5732735 |
| Included Sizes | 2mm, 3mm, 4mm, 5mm, 6mm |
| Point Angle | 120° |
| Rake Angle | 0° (Negative/Neutral for edge strength) |
| Shank Type | Cylindrical (h6 tolerance) |
| Application | Hardened Steel, Broken Tap Removal |
| Origin | Made in Sweden (Sandvik standard) |
Keywords
Sandvik Coromant, HC 23456, hard cut drills, broken tap removal, carbide drills, hardened steel drills, NOS tools, vintage machinist tools, 2-6mm drill set.





