6mm Drill Groove Cutter HSS-Co8 3-Flute Long, 57mm Overall Length - TECWERK

Take advantage of the combination of robust cutting performance, long shank versatility and clear material guidance for reliable groove milling in mixed workshops. Order the cutter directly via Metav Werkzeuge or consult our specialists for application-specific advice.

Slot drill DIN 844 Type N, Ø6 mm (HSS‑Co8) — Long 3‑flute cutter by TECWERK

The Slot drill DIN 844 Type N, Ø6 mm (HSS‑Co8) is a long, centre‑cutting slot drill designed for milling grooves and keyways in medium‑strength steels and cast iron, with a Weldon shank for secure clamping.

• HSS‑Co8 material, high hot hardness
• Centre‑cutting three‑flute geometry
• Weldon shank with driving flat
• Suitable for steel and cast iron up to ~800 N/mm²

Reliable cutting power for stable production results

The long, three‑flute geometry provides a balance between chip evacuation and stability, making the cutter especially suitable for interrupted cuts and groove milling operations. Manufactured from HSS‑Co8, the tool sustains higher cutting temperatures and maintains edge integrity compared with standard high‑speed steel, which translates into more consistent results in medium‑strength materials. The centre‑cutting design allows plunge starts and reduces the need for pre‑drilling in many setups, helping to save cycle time while preserving component tolerances.

Practical design that simplifies set‑up and tool changes

With a Weldon shank and a defined driving flat, the cutter fits securely in standard holders and reduces the risk of slippage under load. The nominal Ø6 mm shank and the specified effective length 19 mm deliver a predictable overhang behaviour for longer reaches, while the long overall length increases accessibility for deeper grooves. These mechanical specifics are chosen to improve machine uptime and decrease fixture adjustments, offering measurable improvements in workshop efficiency for repetitive groove milling tasks.

Clear material guidance and application limits for safe use

Application notes indicate very good suitability for cast iron and very good suitability for steel, with conditional use on non‑ferrous metals and stainless materials. The uncoated variant is optimised for workpieces up to approximately 800 N/mm²; coated versions push capability towards 1000 N/mm². Understanding these limits helps to select the correct feed and speed, avoiding premature wear. The cutter’s geometry and material composition mean it copes well with typical workshop steels and cast components while signalling when a specialist coated or carbide solution would be required for harder alloys.

What to expect in daily use and maintenance

Routine inspection of the cutting edges and clamping flat is straightforward: maintain clean contact surfaces and check for burr formation after heavy use. Regrinding or replacement intervals depend on the workpiece material and cutting conditions, but the HSS‑Co8 composition offers a robust compromise between hardness and regrindability. For small series and repair work, this tool provides an economical alternative to carbide while sustaining reproducible groove quality, making it a practical staple for toolrooms and maintenance departments.

Contact Metav Werkzeuge for tailored advice and ordering: Metav Werkzeuge’s specialists will confirm suitability for the specific application and assist with technical data and procurement

Technical data

• Article number: 2000866228NW
• Product label: Slot drill DIN 844 Type N D.6mm HSS‑Co8 Weldon Z.3 long TECWERK
• Standard: DIN 844
• Manufacturer: TECWERK

Facts

• Diameter: 6 mm
• Overall length: 57 mm
• Cutting length: 3 mm
• Effective length: 19 mm
• Shank diameter: 6 mm
• Number of cutting edges: 3
• Free cutting length: 5.5 mm
• Cutting direction: right‑handed

Special features

• Material: HSS‑Co (HSS‑Co8)
• Weldon shank with driving flat
• Centre cutting capability
• Long design (Type N)
• Designed for steel and cast iron applications
• Packaging unit: 1

FAQ

What materials is this cutter best suited for?
The slot drill is very well suited to steel and cast iron, with conditional suitability for non‑ferrous metals and stainless steel; the data sheet recommends use up to about 800 N/mm² for uncoated tools.

Can the cutter be used for plunge milling or only side milling?
Yes — the centre‑cutting three‑flute geometry permits plunge starts as well as conventional slot milling, reducing the need for additional pre‑drilling in many operations.

What clamping system is required for safe operation?
A secure holder accepting a Weldon‑style shank with a driving flat is required to prevent slippage; ensure the collet or block is clean and correctly torqued before machining.

Is a coated version available for harder materials?
The uncoated tool is specified for up to ~800 N/mm²; coated variants are typically used to extend capability towards 1000 N/mm² — consult Metav Werkzeuge for coating options and recommendations.

How does the long design affect machining stability?
The extended overall length increases reach but also requires attention to overhang; proper fixturing and conservative feeds reduce deflection and preserve surface finish.

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