25mm Countersink DIN 335C 90° HSS Nano Coated 3-Flute Shank With Flats, 0.2mm/rev - TECWERK

Combine the 90° geometry, HSS Nano coating and the three‑flute configuration for faster, more durable countersinking; order directly via Metav Werkzeuge or consult our specialists for application advice.

TECWERK Countersink DIN 335C, 25 mm — 90° HSS Nano, three‑flute

The TECWERK Countersink DIN 335C, 25 mm is a 90° precision countersink designed for industrial metalworking and workshop use, delivering optimised chamfers and burr‑free finishes across a wide range of materials.

• 90° geometry for standard countersinks
• HSS Nano coating for high wear resistance
• Three‑flute design for smooth, stable cutting
• Reduced feed force and extended tool life

Consistent 90° geometry for repeatable, clean chamfers

The 90° geometry, specified to DIN 335 C, ensures consistent chamfer angles and reliable seating for fasteners and assemblies. The ground cutting faces maintain concentricity during use, which reduces rework and inspection times. For those unfamiliar with standards, the 90° figure describes the included angle of the countersink cone; adherence to DIN 335 C means predictable mating with standard screws and rivets. This leads to steadier production processes and fewer rejected parts.

HSS with Nano coating for extended tool life under heat

Constructed from high‑speed steel (HSS) and finished with a specialised Nano coating, the tool resists abrasion and maintains hardness at elevated temperatures. The coating and optimised chipspace parameters contribute to up to 60% higher tool life compared with uncoated equivalents, while maintaining edge integrity when machining tougher grades. Practical machining data supports efficient use: at feed forces up to 800 N in steel, a feed of 0.2 mm/rev is advised for stable performance and predictable tool longevity.

Three‑flute geometry and variable relief for fast, calm cutting

The three‑flute design and specially developed chip‑space geometry enable smooth chip formation and evacuation, producing an extremely quiet run and less vibration. A variable relief along the cutting edge reduces contact pressure, which lowers the required feed force and helps operators achieve faster cycle times—manufacturers report up to 30% faster countersinking in comparable setups. Right‑hand cutting ensures compatibility with standard machining centres and hand drills where applicable.

Broad material compatibility and secure clamping for workshop needs

Engineered for versatility, the tool is suitable for steel, stainless and heat‑resistant steels, aluminium, brass and various plastics, making it appropriate for mixed‑material production lines and maintenance shops. The shank features three clamping flats from a nominal diameter of 8.3 mm for secure gripping in chucks and collets, reducing slip and improving concentricity. This combination of material range and shank design supports flexible tooling strategies and simplifies tool inventory.

Contact Metav Werkzeuge for tailored application support and fast supply of TECWERK countersinks from Emmerich — consultants are available at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: 2000865184NW
• Designation: Countersink DIN 335C, 25 mm, 90°
• Manufacturer: TECWERK
• Packaging unit: 1

Core figures

• Diameter: 25 mm
• Countersink angle: 90°
• Number of flutes: 3
• Feed in steel (≤ 800 N): 0.2 mm/rev
• Shank flats from nominal Ø: 8.3 mm

Materials & features

• Material: high‑speed steel (HSS)
• Coating: Nano coating
• Compatible with steel, stainless and heat‑resistant steels, aluminium, brass, plastics
• Right‑hand cutting
• Variable relief and optimised chip space
• Reduced feed force; up to 60% longer tool life; up to 30% faster countersinking

FAQ

What materials can be countersunk with this tool?
The TECWERK countersink is suitable for steel, stainless and heat‑resistant steels, aluminium, brass and a range of plastics, offering a versatile solution for mixed‑material workshops.

What does the 90° DIN 335 C rating mean for assembly work?
A 90° DIN 335 C geometry provides a standard cone angle for screw and rivet seating, ensuring consistent fits and simplifying assembly checks when using the TECWERK countersink.

How does the Nano coating affect performance?
The Nano coating increases wear resistance and hot hardness, which extends cutting life and maintains edge stability under higher temperatures and demanding cycles.

Is the shank compatible with standard chucks and collets?
Yes; the shank has three clamping flats from a nominal diameter of 8.3 mm for secure gripping and improved concentricity in common clamping systems.

Manufacturer/Responsible: NORDWEST Handel AG, Robert‑Schuman‑Straße 17, 44263 Dortmund