6.3mm Countersink DIN 335C 90° 3-Flute HSS-Co Cylindrical Shank, Smooth Cut - TECWERK

Benefit from precise chamfering thanks to the combination of a 90° cutting angle, three‑flute geometry and HSS‑Co construction for enhanced heat and wear resistance; these features deliver chatter‑free deburring and consistent surface quality. Order the countersink directly via Metav Werkzeuge or consult the advisers for machining guidance.

TECWERK Countersink DIN 335 C — 90° Ø 6.3 mm, HSS‑Co, 3‑flute

The TECWERK Countersink DIN 335 C 90° Ø 6.3 mm HSS‑Co is a three‑flute countersink designed for chamfering and deburring holes in steel, castings and non‑ferrous metals with a rattle‑free cutting action

• DIN 335 C geometry, 90° chamfer
• Three‑flute design for chatter‑free cutting
• HSS‑Co for stainless and heat‑resistant steels

Consistent chamfers that speed up production

The three‑cutting‑edge geometry produces a chatter‑free cut that reduces rework and improves cycle times in series operations. By combining a 90° point with DIN 335 C geometry, the cutter creates standardised chamfers suitable for countersinking screw heads and deburring drilled holes. The result is a repeatable finish that reduces the need for manual post‑processing and supports a smoother production flow in workshops and light industrial settings.

Material capability and tool grade explained

Constructed in HSS‑Co, the countersink handles common workshop materials such as steel, cast iron and non‑ferrous metals, and extends capability to stainless and heat‑resistant steels where higher red‑hardness is required. The cobalt alloy increases hot hardness and resistance to abrasive wear, which helps maintain edge geometry under elevated cutting temperatures. This makes the tool a practical choice where a single cutter must cover mixed material batches without frequent replacement.

Design advantages for surface quality and tool life

The three flutes ensure an even distribution of cutting forces, producing a rattle‑free machining process and a smoother bore edge. Reduced vibration not only improves the surface appearance but also extends tool life by limiting uneven flank wear. The cutter’s cylindrical shank facilitates secure clamping in conventional chucks and collets, providing stable concentricity and dependable repeatability in mechanical drilling operations.

Practical machining guidance and compatibility

For machining in steel, a recommended feed reference is 0.09 mm/rev at cutting forces up to 500 N, balancing material removal and surface finish. The DIN 335 C geometry ensures compatibility with standard countersinking applications and simplifies tool selection for assembly operations. When integrating the cutter into production, ensure correct clamping and alignment to maintain the specified chamfer angle and to preserve the three‑flute cutting edges for consistent results.

For reliable, chatter‑free chamfering choose the TECWERK HSS‑Co countersink — contact Metav Werkzeuge for ordering and technical advice at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: 2000865000NW
• Description: Countersink DIN 335 C, 90° Ø 6.3 mm, HSS‑Co, 3 flutes, cylindrical shank, TECWERK
• Packaging unit: 1

Data

• Diameter: 6.3 mm
• Countersink angle: 90°
• Number of flutes: 3
• Feed in steel (up to 500 N): 0.09 mm/rev

Special features

• DIN 335 C geometry
• HSS‑Co material grade for elevated red‑hardness
• Suitable for steel, castings, non‑ferrous metals
• Extended use on stainless and heat‑resistant steels
• Three cutting edges for chatter‑free cutting
• Cylindrical shank

FAQ

Which materials can this countersink machine?
The TECWERK countersink (SKU 2000865000NW) is designed for steel, castings and non‑ferrous metals; the HSS‑Co grade also permits machining of stainless and heat‑resistant steels.

What standard and angle does the cutter follow?
The tool conforms to DIN 335 C and features a 90° countersink angle suitable for standard chamfering and screw‑seat preparation.

How many flutes does the cutter have and why does that matter?
With three flutes, the cutter delivers an even cutting action that reduces vibration and results in a rattle‑free finish and longer tool life.

What feed is recommended for machining steel?
A reference feed of 0.09 mm/rev is specified for steel at cutting forces up to 500 N, offering a balance between finish and productivity.

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