4mm Slot Cutter DIN 327 Type N HSS-Co8 3-Flute Short 3mm Cut Length, Weldon Shank 6mm - TECWERK

Take advantage of the combination of high-alloy cutting steel, compact short design and secure Weldon shank for accurate, repeatable keyway milling; order the cutter directly via Metav Werkzeuge or consult our specialists for application advice.

Keyway cutter to DIN 327, Type N — Ø 4 mm, HSS‑Co8 (TECWERK)

The Keyway cutter to DIN 327, Type N is a short, three-flute tool designed for precision milling of keyways and deep slots in workshop and light industrial settings.

• High-alloy HSS‑Co8 for increased wear resistance
• Three cutting edges for smooth keyway milling
• Weldon shank, 6 mm, secure tool holding
• Very good performance on steel and cast iron

Precision milling for repeatable keyways

The cutter is engineered for consistent, clean keyways thanks to its three cutting edges and DIN 327 geometry. The short configuration reduces tool deflection, delivering tighter tolerances on shallow and medium-depth slots. Using a high-alloy substrate means chip formation and dimensional stability are improved during intermittent cuts, which translates into fewer rejects and less rework for systematic production runs.

Robust cutting performance in demanding materials

Made from HSS‑Co8, the tool offers enhanced red-hardness and abrasion resistance for prolonged service life when machining ferrous materials. The specification allows machining of workpieces with low to medium tensile strength up to approx. 800 N/mm² with the uncoated tool; coated variants can extend that range further. The design is particularly effective on steel and cast iron, while non-ferrous and stainless applications are possible with adapted cutting parameters.

Secure mounting and efficient tool changeover

A Weldon shank with a 6 mm diameter provides positive drive and fast tool exchange in standard toolholders. The cylindrical shank with driving flat reduces play under torque, enabling stable cutting at the small diameter of Ø 4 mm. The centre-cutting face allows plunge starts where required, and the right-hand cutting direction suits conventional machine set-ups without special fixturing.

Short design that improves process reliability

The compact overall length minimises overhang and vibration in handheld or small milling machines, improving surface finish and extending tool life. The short design also supports high-feed operations within the cutter’s geometric limits, enabling faster cycle times in assembly-line or batch processes. For workshops seeking a balance between rigidity and accessibility, this tool delivers reliable keyway quality with minimal operator intervention.

Contact Metav Werkzeuge for tailored advice on selecting the right TECWERK keyway cutter and matching tooling for specific materials and machine setups

Technical data

• Article number: 2000866178NW
• Manufacturer: TECWERK
• Product type: Keyway cutter
• Standard: DIN 327

Facts

• Diameter: 4 mm
• Overall length: 51 mm
• Cutting length: 3 mm
• Effective length: 7 mm
• Shank diameter: 6 mm
• Number of cutting edges: 3

Special features

• Material: HSS‑Co8
• Type N, short, three-flute
• Weldon shank, cylindrical shank with driving flat
• Centre cutting for plunge capability
• Right-hand cutting
• Suitable for steel: very good
• Suitable for cast iron: very good
• Suitable for non-ferrous metals: conditionally suitable
• Suitable for stainless (INOX): conditionally suitable
• For machining materials up to approx. 800 N/mm² (uncoated)

FAQ

What is the recommended application for this keyway cutter?
The TECWERK keyway cutter (DIN 327, Type N, Ø 4 mm, SKU 2000866178NW) is intended for milling keyways and deep slots in steel and cast iron where a short, rigid tool is required.

Can this cutter be used for plunge cutting?
Yes, the tool is centre cutting and therefore suitable for limited plunge starts as well as peripheral milling operations.

Which toolholder is required for secure clamping?
A holder compatible with a 6 mm Weldon shank and driving flat is recommended to ensure positive drive and minimise runout.

Is the cutter suitable for stainless steels?
Stainless (INOX) can be machined with adapted feeds and speeds; the cutter is conditionally suitable for such materials but performs best on steel and cast iron.

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