6.3-25mm 90° Countersink Set HSS Right-Hand Cylindrical Shank, RUNaTEC Coating - Ruko GmbH

Take advantage of a durable, standards-compliant countersink solution that combines HSS performance with a RUnaTEC coating for longer tool life; order directly via Metav Werkzeuge or request further advice from their consultants.

Countersink set 90° ULTIMATECUT 4S 6.3–25 mm HSS by Ruko — 90° angle, RUnaTEC-coated, cylindrical shank

The Countersink set 90° ULTIMATECUT 4S 6.3–25 mm HSS provides precision chamfering and deburring for a wide range of workshop tasks, designed for use on steels, aluminium and many plastics.

• RUnaTEC coating for longer life
• Conforms to DIN 355, 90° angle
• Cylindrical shank, right-hand cutting
• HSS for steel, aluminium and plastics

High-performance cutting for consistent chamfers and countersinks

The set is built from HSS and designed for industrial use where consistent results matter. The 90° geometry, complying with DIN 355, delivers a predictable chamfer profile that suits countersinking for fasteners and deburring close to specification. The RUnaTEC coating reduces wear at the cutting edge, resulting in longer tool life and fewer interruptions for tool changes. For production environments aiming to increase throughput, the combination of solid high-speed steel and coating supports higher material removal rates while maintaining surface quality.

Practical handling and workshop efficiency

With a cylindrical shank and right-hand cutting flutes, the set offers reliable clamping in common toolholders and straightforward feed direction for standard machine setups. The 6.3–25 mm range covers typical hole-to-fastener sizes, reducing the need for multiple individual tools. Supplied in a plastic case, the set is organised for immediate deployment and safe storage, helping to keep the workplace tidy and minimising search time. The measured size range and standardised angle simplify tool selection and inventory planning in busy workshops and maintenance departments.

Versatile material compatibility and lasting precision

The cutters are suitable for steel, aluminium and plastics, enabling one set to be used across mixed production tasks. The combination of material choice and surface treatment provides a balance between hardness and toughness, supporting both accuracy and resistance to chipping. Built to withstand repetitive use, the set contributes to predictable machining results and reduced process variation. For buyers seeking a robust countersinking solution that supports repeatable assembly quality, this set represents a pragmatic investment in precision and durability.

For precise specification advice or to arrange supply through Metav Werkzeuge, contact Metav Werkzeuge GmbH — the team will advise on suitability and delivery from Emmerich.

Technical data

• Article number: 4000605559NW
• Item designation: Kegelsenkersatz 90Grad ULTIMATECUT 4S 6,3-25mm HSS
• Manufacturer: Ruko GmbH

Facts

• Angle: 90°
• Size range: 6.3–25 mm
• Material: HSS
• Standard: DIN 355

Special features

• RUnaTEC coating for extended life
• Cylindrical shank
• Right-hand cutting
• Suitable for steel, aluminium and plastics
• Packaging: plastic cassette
• Packaging unit: 1

FAQ

What materials can this countersink set machine?
The countersink set is suitable for steel, aluminium and plastics, with HSS construction and RUnaTEC coating providing balanced performance across these materials.

Does the set comply with industry standards?
Yes, the geometry follows DIN 355 with a 90° angle to ensure consistent chamfer profiles for standard fastenings.

How is the tool set supplied for storage and transport?
The cutters are supplied in a plastic cassette, offering organised storage and protection between uses.

Manufacturer/Responsible: Ruko GmbH Präzisionswerkzeuge, Robert-Bosch-Strasse 7, 71088 Holzgerlingen