6.3-25.0mm 90° Countersink Set HSS-Co5, Right-Hand, Cylindrical Shank, RUnaTEC Coating, DIN 355 - Ruko GmbH

Take advantage of the combination of durable HSS‑Co5 construction, RUnaTEC coating and a precise 90° geometry for consistent chamfering across different materials; the compact set reduces changeover time and supports uninterrupted workshop production. Order directly via Metav Werkzeuge or consult their specialists for application advice.

RUnaTEC UltimateCut 4S 90° Countersink Set – HSS‑Co5, 6.3–25.0 mm

The RUnaTEC UltimateCut 4S countersink set is a four‑piece industrial countersink collection designed for precise deburring and chamfering in metalworking and general workshop use.

• RUnaTEC coating for extended tool life
• HSS‑Co5: cobalt high-speed steel grade
• 90° geometry for precise chamfers
• Cylindrical shank, DIN 355 standard

High-performance cutting for reliable productivity

The set is engineered around HSS‑Co5, a cobalt‑enriched high‑speed steel that offers greater red hardness and wear resistance than standard HSS. Combined with the RUnaTEC coating this composition lengthens service intervals and reduces the frequency of tool changes, which directly supports higher throughput on the shop floor. The 90° cutting angle delivers repeatable chamfers and countersinks, while the diameter range 6.3–25.0 mm covers common finishing tasks. Where process stability and predictable tool life are priorities, this countersink collection provides measurable efficiency gains.

Wide material compatibility for flexible applications

Thanks to the chosen material and geometry, the set is suitable for a broad range of substrates: high-strength steels, stainless steel (V2A), structural steel, aluminium and various plastics. The right‑hand cutting design ensures clean chip evacuation in standard machining centres and manual drills alike. Conformance with DIN 355 means the tools fit conventional holders and chucks used in industrial operations, reducing retooling effort. The cylindrical shank promotes secure clamping and concentricity, which supports accurate run‑out and uniform chamfer quality even under heavy use.

Practical handling and workshop integration

Each cutter arrives in a compact plastic cassette for safe transport and organised storage, helping to keep the workbench orderly and minimising downtime spent searching for tools. The set’s construction focuses on long‑term value: initial investment is offset by fewer replacements and lower process variability. For teams integrating these cutters into repetitive production, the combination of coating and cobalt steel improves lifecycle performance and maintains consistent surface quality. Maintenance is straightforward — standard regrinding practices apply — and the set’s design eases inventory management in a production or maintenance environment.

Contact Metav Werkzeuge for tailored selection support on the RUnaTEC UltimateCut countersink set and arrange reliable delivery from Emmerich to the workshop.

Technical data

• Article number: 4000605565NW
• SKU: 4000605565NW
• Label: Kegelsenkersatz 90Grad ULTIMATECUT 4S 6,3-25,0mm HSS-Co5 RUnaTEC

Facts

• Diameter range: 6.3–25.0 mm
• Angle: 90°
• Material grade: HSS‑Co5
• Standard: DIN 355
• Shank: cylindrical
• Cutting direction: right‑hand

Special features

• Coating: RUnaTEC coating for longer tool life
• Suitable for: high‑strength steels, stainless steel V2A, structural steel, aluminium, plastics
• Packaging: plastic cassette

FAQ

What diameter range does the countersink set cover?
The RUnaTEC UltimateCut 4S set covers diameters from 6.3 mm to 25.0 mm, providing a versatile span for common chamfering tasks.

Is the material suitable for stainless steel applications?
Yes, the HSS‑Co5 composition and the RUnaTEC coating make the set suitable for stainless steel (V2A) and other demanding metal applications.

Does the set comply with industry standards for holders and chucks?
The cutters conform to DIN 355, ensuring compatibility with standard holders and straightforward integration into existing tooling systems.

How is the set delivered and stored?
The cutters are supplied in a plastic cassette for secure transport and organised workshop storage, helping to protect cutting edges and simplify inventory control.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com