6.3-25mm 90° Countersink Set HSS Right-Hand Cylindrical Shank, RUnaTEC Coating, DIN 355 - Ruko GmbH

Compact durability meets consistent chamfering with RunaTEC-coated HSS and a precise 90° geometry for repeatable results; the set is supplied in a practical plastic cassette and can be ordered directly via Metav Werkzeuge or discussed with their consultants for tailored workshop supply.

ULTIMATECUT 4S Countersink Set 90° HSS (6.3–25 mm) — Ruko

The ULTIMATECUT 4S is a 90° countersink set for clean chamfers and deburring in workshops and production environments, designed for use on steel, aluminium and plastics with a cylindrical shank.

• RUnaTEC coating for longer tool life
• DIN 355 specification for standardised geometry
• 90° countersink for standard chamfers
• Supplied in a robust plastic cassette

Superior chamfering accuracy for reliable assembly

The set is engineered to deliver consistent chamfer dimensions thanks to its 90° geometry and compliance with DIN 355, which together ensure reproducible results across batches. Made from HSS, the cutters hold an even cutting edge under typical workshop conditions, reducing rework and improving assembly fit. The dimensions span 6.3–25 mm, covering typical hole sizes encountered in mechanical assembly and fabrication, which supports efficient process planning and fewer tool changes.

Enhanced lifetime and broad material compatibility

A RunaTEC coating extends flank life and improves wear resistance, particularly when machining abrasive alloys or mixed batches. The cutters are right-cutting with a cylindrical shank, enabling secure clamping in standard drill chucks and holders and ensuring stable rotation at conventional speeds. Material compatibility includes structural steel, aluminium and a range of plastics, so the set is suitable for metalworking, prototyping and repair tasks; the coating and HSS substrate together balance edge retention with economical resharpening intervals.

Practical handling and workshop readiness

Each tool is presented in a labelled plastic cassette for safe storage and quick selection, reducing downtime at the bench. The set’s shank form and sizes support rapid tool changes on portable drills and bench machines, while the standardised geometry simplifies programming and inspection routines. Metav’s distribution from Emmerich provides a reliable supply chain and professional backing; this combination of availability, technical specification and sensible packaging supports uninterrupted production and lower total tooling costs.

Contact Metav Werkzeuge for expert advice on integrating the ULTIMATECUT 4S into the workflow and to secure dependable supply from Emmerich.

Technical Data

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

Facts

• Angle: 90°
• Size range: 6.3–25 mm
• Standard: DIN 355
• Packaging unit: 1

Special features

• RUnaTEC coating for extended life
• Material: HSS
• Shank: cylindrical shank
• Cutting direction: right-cutting
• Suitable for structural steel, aluminium, plastics
• Packaging: plastic cassette

FAQ

What materials can be machined with this countersink set?
The ULTIMATECUT 4S set is made from HSS and specified for use on structural steel, aluminium and various plastics, making it versatile for general workshop applications.

Is the geometry standardised for inspection and replacement?
Yes, the set conforms to DIN 355, which ensures consistent 90° chamfer dimensions and simplifies quality checks and replacement planning.

How does the RUnaTEC coating affect performance?
The RunaTEC coating increases wear resistance and extends tool life under normal cutting conditions, reducing the frequency of regrinds and downtime.

Can the cutters be used in handheld drills?
The cylindrical shank design is compatible with standard drill chucks, providing secure clamping for portable and bench drilling equipment.

Is the set supplied ready for safe storage?
The cutters are supplied in a labelled plastic cassette, offering organised storage and straightforward tool selection at the workbench.

What sizes are included and are they suitable for common workshop tasks?
The set covers 6.3–25 mm, which matches many standard hole-to-chamfer requirements in mechanical assembly and maintenance.

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