3mm Solid Carbide End Mill DIN 844 Type N 12mm Cutting Length 4-Flute Long Right-Hand - TECWERK

Take advantage of a centred cutting geometry and robust HSS‑Co8 composition to maintain steady chip evacuation and long tool life under medium-duty production. The combination of a 3 mm diameter, 12 mm cutting length and a Weldon shank offers a cost‑effective, secure mounting for repeated setups — order the tool via Metav Werkzeuge or consult our advisors for application-specific recommendations.

TECWERK HSS‑Co8 Long 4‑Flute End Mill, 3 mm Ø, 12 mm Cutting Length (DIN 844 Type N, Weldon Shank)

The TECWERK HSS‑Co8 long 4‑flute end mill serves as a centre‑cutting, right‑hand milling tool for general machining tasks on steel and cast iron with reliable chip control and secure clamping.

• HSS‑Co8 for improved heat resistance
• DIN 844 Type N long 4‑flute geometry
• Centre‑cutting for plunge milling
• Weldon shank with drive flat for secure clamping

Consistent cutting performance for production and repairs

The long, four‑flute geometry specified in DIN 844 Type N delivers a balance between chip clearance and cutting edge engagement, which reduces vibration in longer overhangs. The HSS‑Co8 composition improves hot hardness compared with standard HSS, meaning sustained performance under higher cutting temperatures. In practice, this results in more consistent dimensional accuracy over longer runs and fewer tool changes for small to medium batch sizes.

Secure clamping and fast changeovers for workshop efficiency

A Weldon shank with drive flat provides a positive mechanical grip in the toolholder, improving concentricity and reducing slippage in frequent setup cycles. The cylindrical shank with drive flat permits rapid, repeatable clamping in standard collets and end mill holders, lowering set‑up time and minimising the risk of workpiece rejects. These features combine to support a smoother workflow on the shop floor and shorter machine idle times.

Material suitability and machining limits explained

The tool is designed for machining materials up to approximately 800 N/mm² with uncoated tools and can reach about 1,200 N/mm² when used with an appropriate coating on comparable grades. It is very well suited for steel and cast iron, while non‑ferrous metals and stainless steels are indicated as conditionally suitable depending on cutting parameters. The term "centre‑cutting" means the tool can perform plunge cuts as well as peripheral milling, expanding its range of application for repair work and feature machining.

Predictable tool life and practical handling advice

With a 3 mm diameter and 12 mm cutting length, the tool provides a compact profile for fine detail work while keeping enough cutting edge for moderate feed rates. The four flutes offer improved surface finish compared with two‑flute alternatives when machining steels, at the expense of slightly reduced chip space — a trade‑off that benefits finishing passes. For best results, select spindle speeds and feeds in line with the material class and ensure coolant or compressed air is used to aid chip evacuation and control temperatures.

Contact Metav Werkzeuge for a tailored recommendation on clamping options and cutting data — phone +49 2822 7131930 or eMail info@metav-werkzeuge.com to discuss the TECWERK end mill and matching holders

Technical data

• Article number: 2000866370NW
• Product name: TECWERK HSS‑Co8 long 4‑flute end mill, DIN 844 Type N
• Manufacturer: TECWERK
• Packaging unit: 1

Numbers / Core technical data

• Diameter: 3 mm
• Cutting length: 12 mm
• Flutes: 4
• Material grade: HSS‑Co8
• Machinable strength: up to 800 N/mm² (uncoated), up to 1,200 N/mm² (coated)

Designs / Special features

• DIN 844 Type N geometry
• Centre‑cutting (plunge capable)
• Right‑hand cutting
• Weldon shank with drive flat (cylindrical shank with take‑up surface)
• Long version for extended reach
• Suitable: steel (very good), cast iron (very good)
• Conditional suitability: non‑ferrous metals, stainless steel

FAQ

What is the main material for this end mill and why is it beneficial?
The end mill is made from HSS‑Co8, a high‑speed steel with cobalt that retains hardness at elevated temperatures, which benefits continuous cutting in medium‑strength steels and extends tool life.

Can this tool perform plunge milling?
Yes, the centre‑cutting geometry allows plunge operations as well as conventional peripheral milling, making the TECWERK end mill versatile for slotting and feature generation.

Which materials are best suited to this tool?
The tool is very well suited for steel and cast iron; non‑ferrous metals and stainless steels are conditionally suitable depending on cutting data and coating selection.

Is the Weldon shank compatible with standard holders?
The Weldon shank with drive flat fits standard Weldon‑style end mill holders and offers reliable, repeatable clamping for workshop use.

What cutting parameters should be prioritised for a 3 mm tool?
Prioritise reduced overhang, correct spindle speed for the workpiece material, and effective chip evacuation. The small diameter benefits from conservative feed per tooth to avoid excessive deflection.

Manufacturer/Responsible: Teknik Cutting Tools, Buyukkayacık OSB Mah.422 Nolu Sokak.No:9, Selcuklu/KONYA/TURKEY / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; +49 2822 7131930; eMail: info@metav-werkzeuge.com