19mm 90° Countersink, 4-Flute HSS RUnaTEC Coating, Right-Hand, 3-Flats Shank, For Steel - Ruko GmbH

Take advantage of the combination of HSS construction, RUNaTEC coating and four‑flute geometry for faster, quieter 90° countersinking — order the tool directly via Metav Werkzeuge or consult our specialists for application advice.

ULTIMATECUT 4S Countersink 90° (Ø 19 mm) by RUKO — HSS, RUNaTEC-coated, 4‑flute

The ULTIMATECUT 4S is a 90° production countersink designed for both stationary machines and manual use, delivering fast, chatter‑free countersinking in steel and general metalworking.

• RUnaTEC-coated HSS for extended tool life
• Four‑flute geometry for very smooth run
• 90° cone for standard countersinking
• Shank with three flats for secure clamping

Accelerated throughput with lower cutting forces

The combination of HSS base material and RUNaTEC coating reduces friction and heat during cutting, which leads to significantly lower feed force requirements and higher process reliability. The four‑cutting‑edge geometry provides balanced chip formation and a very quiet run, enabling up to 50% faster countersinking and, in many cases, up to three times more countersinks before tool change. This results in measurable gains in cycle times and less operator fatigue when used in handheld or stationary setups.

Consistent sink quality and minimised rework

A 90° cone angle manufactured to DIN 335C gives a standard profile for fast assembly and consistent screw seating. The right‑hand cutting design and four flutes produce an optimal sink finish without chatter marks, reducing secondary operations. The shank with three clamping flats ensures secure toolholding and concentric performance, which is particularly valuable when surface quality and repeatability are critical for final assembly.

Versatile performance in workshop and production environments

Engineered for both machine and manual applications, this countersink supports a recommended feed in steel up to 800 N: 0.19 mm/rev, balancing material removal rate with surface finish. The tool’s construction makes it suitable for a broad spectrum of metalworking tasks where a robust, reliable countersink is required. Clear advantages include quicker setup, fewer tool changes and a reduced need for rework, making it a pragmatic choice for busy workshops and production lines alike.

Contact Metav Werkzeuge for tailored advice on the RUKO ULTIMATECUT 4S and ensure fast, reliable countersinking for your workshop or production facility.

Technical Data

• Article number: 4000605553NW
• Item designation: ULTIMATECUT 4S countersink, RUKO

Facts

• Diameter: 19 mm
• Cone angle: 90°
• Number of cutting edges: 4
• Standard: DIN 335 C
• Recommended feed in steel (≤800 N): 0.19 mm/rev

Special features

• Material: HSS
• Coating: RUNaTEC
• Right‑hand cutting
• Shank with three flats for secure clamping
• Optimised for stationary and manual use
• Reduced feed force, quieter operation, improved sink count

FAQ

What materials is this countersink suitable for?
The RUKO ULTIMATECUT 4S is made from HSS with a RUNaTEC coating and is intended primarily for steel and general metalworking applications; refer to process parameters for specific materials.

Can the tool be used in handheld operations as well as on machines?
Yes, the geometry and coating of the ULTIMATECUT 4S are optimised for both manual and stationary machine use, offering a quiet run and reduced required feed force.

What benefit does the RUNaTEC coating provide?
RUNaTEC coating on the ULTIMATECUT 4S lowers friction and heat, extending tool life and enabling higher countersinking rates with improved surface finish.

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