4mm Keyway Cutter DIN 327 Type N HSS-Co8 3-Flute Short, Weldon Shank - TECWERK

Combine reliable HSS‑Co8 construction with a Weldon shank and three‑cutting‑edge geometry to achieve precise, deep keyway milling; ideal for steel and cast iron machining. Order the tool via Metav Werkzeuge or consult our specialists for application advice.

Keyway milling cutter DIN 327 Type N, Ø4 mm, HSS‑Co8, Weldon, 3‑flute (short) — TECWERK

The Keyway milling cutter DIN 327 Type N is a short, three‑cutting‑edge tool designed for precise milling of keyways and deep slots in steel and cast iron, featuring a Weldon drive flat for positive clamping.

• HSS‑Co8 for high wear resistance
• Centre cut for plunge and peripheral milling
• Weldon shank with drive flat for secure clamping
• Very good for steel and cast iron

Accurate keyway geometry for consistent fit and finish

The three‑edge, centre cut geometry provides controlled chip formation and reduced vibration during plunging and peripheral cutting, which leads to a consistent keyway profile and improved surface finish. The HSS‑Co8 composition balances hardness and toughness for sustained cutting performance under intermittent engagement; this reduces the risk of premature tool chipping when machining medium‑strength components and supports predictable tool life in production runs.

Secure clamping and machine compatibility for uninterrupted production

A Weldon shank with drive flat and a 6 mm shank diameter ensures reliable torque transmission and repeatable concentricity in standard collets and chucks. The short overall length increases rigidity, lowering deflection in slotting operations and enabling higher feed rates on rigid milling machines. This combination reduces scrap rates and contributes to a smoother production flow in workshop and light industrial environments.

Material suitability explained for process planning

The tool is optimised for machining ferrous materials: steel and cast iron are rated as very well suited, enabling efficient keyway production in typical shaft and hub assemblies. Non‑ferrous metals and stainless steel are conditionally suitable; adjustments to cutting speed, feeds and coolant strategy are advisable when processing these materials. The tool cuts effectively in materials up to approximately 800 N/mm² with an uncoated cutter and up to 1000 N/mm² when a suitable coating is applied, allowing planners to select the correct tool treatment for higher‑strength applications.

Practical benefits in workshop use and tool management

The compact, short design simplifies tool changes and minimises interference in tight setups, while the three‑flute arrangement balances chip evacuation with edge strength for deeper keyways. For batch production of keys and slots, the cutter reduces setup overhead and supports consistent tolerances. Operators gain from predictable wear behaviour of HSS‑Co8, which facilitates scheduling of regrind or replacement cycles and supports reliable uptime for repetitive machining tasks.

Order the TECWERK keyway milling cutter through Metav Werkzeuge or contact Metav Werkzeuge’s technical team at info@metav-werkzeuge.com / +49 2822 7131930 for tailored machining recommendations and availability

Technical data

• Article number: 2000866178NW
• Designation: Keyway milling cutter DIN 327 Type N, Ø4 mm, HSS‑Co8, Weldon, 3 flutes, short
• Manufacturer: TECWERK

Core data

• Shank diameter: 6 mm
• Cutting edges: 3
• Centre cut: yes
• Right‑hand cutting
• Suitable tensile strength uncoated: up to 800 N/mm²
• Suitable tensile strength with coating: up to 1000 N/mm²

Materials & features

• Material: HSS‑Co8
• Shank: cylindrical with drive flat (Weldon)
• Application: milling keyways and deep slots (face and peripheral milling)
• Material suitability — steel: very good
• Material suitability — cast iron: very good
• Material suitability — non‑ferrous metals: conditionally suitable
• Material suitability — stainless steel: conditionally suitable

FAQ

What materials is this cutter best suited for?
The TECWERK keyway milling cutter is very well suited for steel and cast iron; performance in non‑ferrous metals and stainless steel is conditional and requires adjusted cutting parameters.

Can the cutter be used for plunge milling as well as peripheral cutting?
Yes, the centre‑cut design allows safe plunging as well as peripheral milling, making the cutter suitable for producing deep keyways and slots.

What clamping interface is recommended?
A collet or chuck that accepts a 6 mm cylindrical shank with a Weldon drive flat is recommended to ensure secure clamping and repeatable runout.

Up to what material strength can this tool be used effectively?
The tool is designed for materials up to approximately 800 N/mm² with an uncoated cutter and up to 1000 N/mm² when a suitable coating is applied, allowing selection based on workpiece hardness.

Is the cutter suitable for finishing operations?
The geometry and rigidity of the short design support accurate keyway profiles and improved surface finish in many finishing applications, provided that feeds and speeds are optimised.

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