20.5mm Countersink 90° HSS-Co 3-Flute Cylindrical Shank For Deburring And Countersinking Steel Cast Metals - TECWERK

Take advantage of the combination of robust high-speed-cobalt construction, a three-flute geometry for rattle-free cutting and precise 90° countersinking to maintain production quality and reduce rework. Order the TECWERK countersink directly via Metav Werkzeuge or consult our advisers for machining guidance.

TECWERK 90° Countersink DIN 335 C — Ø 20.5 mm, HSS‑Co, 3‑flute

A TECWERK 90° Countersink DIN 335 C for clean countersinking and deburring of drilled holes in steel, cast iron and non‑ferrous metals, supplied with a cylindrical shank for secure clamping

• DIN 335 C standard countersink
• Three‑flute design for rattle‑free cutting
• HSS‑Co for stainless and heat‑resistant steels
• Cylindrical shank for secure mounting

Consistent cutting performance through high‑alloy material

The use of HSS‑Co (cobalt‑alloy high‑speed steel) delivers a reliable balance of hardness and toughness that preserves edge life under thermal stress. In practice, this means extended tool life when machining tougher grades such as stainless and heat‑resistant steels, while still offering effective performance in steel, cast iron and non‑ferrous metals. The alloy composition reduces premature wear and maintains form, so fewer tool changes are required and process stability improves.

Precision geometry for clean, chatter‑free holes

A three‑flute geometry produces an even cutting action that reduces vibration and prevents the typical chatter associated with two‑flute countersinks. The 90° seating angle conforms to DIN 335 C, enabling accurate chamfer profiles and consistent fastener seating. The net result is a clean edge and reproducible finishes that cut down on secondary deburring, improving throughput and part quality.

Practical machining parameters for predictable results

The tool is optimised for controlled feeds; in steel under loads up to 500 N the recommended feed is 0.2 mm/rev, providing a balance between material removal rate and surface finish. The cylindrical shank simplifies mounting in standard drill chucks or collets and supports concentric running at typical workshop speeds. These measurable parameters allow straightforward integration into existing machining cycles and CNC programmes without extensive requalification.

Workshop advantages and application scope

Designed for general workshop and production use, the countersink is suitable for both manual and automated operations where consistent chamfers and deburring are required. The combination of DIN compliance, rattle‑free three‑flute cutting, and HSS‑Co material supports operations ranging from maintenance benches to series production. Fewer rejects, predictable tool life and straightforward mounting contribute to lower process costs and higher uptime.

Secure the TECWERK 90° countersink from Metav Werkzeuge for dependable workshop supply and expert machining advice from our advisers

Technical Data

• Article number: 2000865012NW
• Label: Kegelsenker DIN 335C 90Grad D.20,5mm HSS‑Co Z.3
• Manufacturer: TECWERK
• Packaging unit: 1

Data

• Diameter: 20.5 mm
• Countersink angle: 90°
• Flutes: 3
• Recommended feed in steel (≤ 500 N): 0.2 mm/rev

Special features

• Material: HSS‑Co (cobalt high‑speed steel)
• Shank: cylindrical shank
• Standard: DIN 335 C
• Application: countersinking and deburring of steel, cast iron, non‑ferrous metals; suitable for stainless and heat‑resistant steels
• Cutting behaviour: rattle‑free due to three‑flute geometry

FAQ

What materials can be machined with this countersink?
The TECWERK 90° countersink is suitable for steel, cast iron and non‑ferrous metals; the HSS‑Co grade additionally supports stainless and heat‑resistant steels.

Is the tool compatible with standard drill chucks?
Yes, the cylindrical shank allows secure mounting in standard drill chucks and collets for both manual and CNC operations.

Which standard does the countersink follow?
The tool complies with DIN 335 C, providing a standardised 90° seating angle for reliable fastener seating.

How does the three‑flute design benefit machining?
The three‑flute geometry produces an even cutting action that reduces vibration, resulting in rattle‑free cuts and improved surface finish.

What are the recommended machining parameters?
For steel under loads up to 500 N a feed of 0.2 mm/rev is indicated; adjust speed and feed according to material and clamping conditions.

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