20.5mm Countersink DIN 335C 90° 3-Flute HSS-Co, For Steel Castings Non-Ferrous - TECWERK

Take advantage of high‑quality chamfering with HSS‑Co cutting performance and a 90° geometry that delivers consistent, chatter‑free results; order this countersink through Metav Werkzeuge or speak to our consultants for application advice and supply from Emmerich.

TECWERK 90° Countersink DIN 335 C, Ø20.5 mm — HSS‑Co, 3‑flute

The TECWERK 90° Countersink DIN 335 C is a robust conical countersink designed for precise deburring and chamfering of holes in a variety of engineering materials.

• 90° geometry for standard countersinks
• HSS‑Co for stainless and heat‑resistant steels
• Three cutting edges for chatter‑free cutting
• Cylindrical shank for standard holders

Consistent chamfers for reliable assembly

The 90° cutting angle, specified to DIN 335 C, produces uniform chamfers and countersinks that match standard fastener seating profiles. This geometry, combined with the Ø20.5 mm diameter, enables repeatable preparation of hole edges for flush fastener installation and improved contact surfaces. The three‑edge cutting layout reduces vibration and is engineered to provide a chatter‑free finish, which reduces rework and accelerates assembly cycles in production runs.

Material compatibility that reduces changeovers

Manufactured in HSS‑Co, the tool offers elevated hot hardness and wear resistance compared with standard high‑speed steel. The plain HSS grade is suitable for steel, cast iron and non‑ferrous metals, while the HSS‑Co variant extends capability to stainless and heat‑resistant steels. This material versatility lowers the need for frequent tool changes and helps maintain consistent surface quality when working across mixed batches or multi‑material assemblies.

Efficient cutting parameters and process stability

The tool is optimized for stable feeds; a recommended feed in steel up to 500 N: 0.2 mm/rev provides a balance between material removal rate and surface finish. The three‑flute design balances cutting forces and ensures a smooth chip flow, which contributes to longer edge life and reduces the likelihood of tool chatter under typical workshop conditions. When used with a rigid setup and appropriate holder, the countersink delivers a clean deburring action that streamlines post‑drilling operations.

Practical integration for the workshop

A cylindrical shank makes the cutter compatible with standard toolholders and drill chucks commonly found in job‑shop and industrial environments, simplifying tool changes and inventory management. The tool’s geometry and coating-free finish make it straightforward to resharpen or replace without special handling. For small batches or continuous production, this countersink supports predictable cycle times and consistent part quality, reinforcing reliable throughput on the shop floor.

For precision chamfering supported by TECWERK’s HSS‑Co performance, contact Metav Werkzeuge for tailored advice and reliable supply from Emmerich.

Technical data

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

Facts

• Standard: DIN 335 C
• Diameter: Ø20.5 mm
• Countersink angle: 90°
• Number of cutting edges: 3
• Feed in steel up to 500 N: 0.2 mm/rev

Special features

• HSS‑Co material for stainless and heat‑resistant steels
• HSS suitability for steel, cast iron and non‑ferrous metals
• Three cutting edges for chatter‑free cutting
• Cylindrical shank for standard holders
• Designed for deburring and chamfering of drilled holes

FAQ

What materials can this countersink process?
The TECWERK 90° Countersink DIN 335 C (SKU 2000865012NW) processes steel, cast iron and non‑ferrous metals in its HSS form; the HSS‑Co variant is suitable for stainless and heat‑resistant steels.

What feed rate is recommended for use in steel?
For steel under a cutting force up to 500 N, a feed of 0.2 mm per revolution is recommended; this balance supports a clean finish while maintaining tool life.

Which holders are compatible with the tool?
The cylindrical shank is compatible with standard drill chucks and common toolholders, enabling straightforward mounting in both bench and machine‑based setups.

Is this tool suitable for high‑temperature alloys and stainless steel?
Yes, the HSS‑Co construction extends the tool’s capability to stainless and heat‑resistant steels, providing improved wear resistance compared with plain HSS.

How can chatter‑free results be achieved consistently?
Chatter‑free cutting is supported by the three cutting edges and correct feed; ensure a rigid clamping arrangement and the specified feed to maintain stable cutting conditions.

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