20.5mm Countersink DIN 335C 90° HSS-Co TiAlN Coated 3-Convex Flutes Cylindrical Shank - TECWERK

Benefit from a combination of HSS‑Co construction, TiAlN coating and spiralised cutting edges for precise, chatter‑free countersinking and extended tool life; order directly via Metav Werkzeuge or consult the specialists for application guidance.

TECWERK Conical Countersink DIN 335 C, 90° – Ø 20.5 mm (HSS‑Co, TiAlN, 3 flutes)

A TECWERK Conical Countersink DIN 335 C engineered for exact, rattle‑free chamfering across a wide range of materials, from mild steel to plastics

• HSS‑Co substrate for high wear resistance
• TiAlN coating for extended tool life
• 90° conical geometry for precise countersinks
• Triple unequal convex flutes for smooth cutting
• Reduced axial and radial cutting forces

High performance where feed force and surface quality matter

The conical chamfering tool combines a HSS‑Co substrate with a TiAlN surface layer to deliver consistent performance under demanding conditions. The spiral flutes and three unequal convex cutting edges ensure a stable cutting action that produces a round, exact and chatter‑free countersink. The tool’s geometry reduces cutting resistance significantly—described performance indicates up to 60% lower feed force and 50% lower radial force compared with conventional designs—resulting in smoother operations, fewer rejects and less strain on machine spindles.

Proven durability and process economy for production environments

Constructed to DIN 335 C and featuring a cylindrical shank for reliable clamping, the tool is optimised for longevity and repeatability. The TiAlN coating increases heat resistance and reduces adhesion of built‑up edge, which extends life in continuous operations and high‑temperature applications. For production planning, the combination of substrate and coating translates directly into longer intervals between tool changes and reduced tool inventory turnover, supporting a measurable improvement in overall process economy and uptime.

Versatility across materials with controlled feed parameters

The countersink is suitable for machining steel, stainless and heat‑resistant steels, aluminium, brass and plastics, making it a single solution for mixed‑material workflows. Spiral‑ground flutes evacuate chips effectively from soft and ductile workpieces while maintaining edge stability in tougher materials. Recommended feed in steel up to 800 N is 0.150 mm/rev, a guideline that balances surface finish and tool life; the right combination of spindle speed and feed will depend on the machine and clamping setup.

Practical advantages for workshop and industrial use

Beyond raw performance figures, the tool’s design reduces operational issues such as chatter and inconclusive edge forms, which simplifies quality control downstream. The 90° geometry matches standard countersink requirements for fastener seating and chamfering, while the right‑hand cutting and cylindrical shank permit straightforward integration into common holders and tool changers. For specialist queries or data sheets relating to application limits and holder compatibility, technical consultation is available from Metav Werkzeuge.

For tailored application advice or to secure reliable supply from Metav Werkzeuge, contact the Metav specialists at info@metav-werkzeuge.com or call +49 2822 7131930 to discuss the TECWERK countersink and its best uses in the production environment.

Technical data

• Article number: 2000865295NW
• UID: 2000865295NW
• Packaging unit: 1
• Manufacturer: TECWERK

Facts

• Diameter: 20.5 mm
• Countersink angle: 90°
• Number of flutes: 3
• Feed in steel up to 800 N: 0.150 mm/rev
• Standard: DIN 335 C

Special features

• Material: HSS‑Co
• Coating: TiAlN
• Spiral fluted with 3 unequal convex cutting edges
• Cylindrical shank, right‑hand cutting
• Suitable for steel, stainless and heat‑resistant steels, aluminium, brass and plastics
• Reduced axial and radial cutting forces; long tool life; chatter‑free countersinking

FAQ

Which materials are suitable for this countersink?
The TECWERK conical countersink (DIN 335 C, Ø 20.5 mm, SKU 2000865295NW) is specified for steel, stainless and heat‑resistant steels, aluminium, brass and various plastics.

What benefits does the TiAlN coating provide?
TiAlN increases surface hardness and heat resistance on the HSS‑Co substrate, which extends tool life and improves performance in elevated temperatures for the TECWERK countersink.

How does the flute geometry affect cutting performance?
The spiral‑ground, three unequal convex flutes of this countersink promote smooth chip evacuation and minimise vibration, resulting in a round, rattle‑free chamfer.

What is the recommended feed for steel applications?
For steel up to 800 N the guideline feed is 0.150 mm per revolution; this setting balances surface finish and tool life for the TECWERK countersink.

Is the tool compatible with standard tool holders?
Yes; the cylindrical shank and right‑hand cutting configuration are designed for straightforward use with standard holders and common clamping systems.

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