16mm Carbide-Tipped Slot Drill DIN 844 Type N 3-Flute Long, HSS-Co8 Z=3 - TECWERK

Take advantage of a long, centre-cutting three-flute design in HSS-Co8 for reliable plunge milling and robust performance in steel and cast iron; order directly via Metav Werkzeuge or consult our specialists for application guidance.

Bohrnutenfräser DIN 844 Typ N D.16mm HSS-Co8 Weldon Z.3 long – slot milling cutter with centre cut and Weldon shank by TECWERK

Bohrnutenfräser DIN 844 Typ N D.16mm HSS-Co8 Weldon Z.3 long is a long, three-flute slot cutter designed for milling grooves and slots in workshop and industrial applications, suitable where extended reach and plunge capability are required

• HSS-Co8 high-speed steel composition
• Three-flute centre-cutting geometry
• 16 mm Weldon shank for secure clamping
• Suited for steel and cast iron machining

Precision and cutting performance for groove milling

The long, three-flute geometry with centre-cutting capability delivers controlled plunge cuts and consistent chip evacuation. Made from HSS-Co8 (high-speed steel with 8% cobalt), the tool sustains elevated temperatures and retains hardness under load, which benefits interrupted cuts and moderate feed rates. The combination of long flute length and a 16 mm shank with a Weldon drive flat ensures stable clamping in tool holders, reducing run-out and improving surface finish when machining steel and cast iron.

Material suitability explained for dependable results

This cutter is optimised for low to medium strength materials and shows very good performance on unalloyed and alloyed steels as well as cast iron; non-ferrous metals and stainless steel are rated as conditionally suitable, reflecting the HSS-Co8 substrate. The specification indicates machining up to approximately 800 N/mm² with uncoated tools and up to 1000 N/mm² when a coating is applied, which helps to select the correct cutting strategy and tool variant for a given job. When surface finish and tool life are priorities, selecting a coated equivalent can extend performance.

Tolerances, diameters and operational benefits

Nominal diameters available for the series include 9, 11, 13 and 15 mm with tolerance class h10 for these sizes, while the remaining diameters conform to e8 tolerance. These tight tolerance classes support repeatable slot widths and precise fits in jigs and assemblies. A 15 mm free-cutting length is provided, enabling deep slotting operations with predictable engagement. The cutter is right-hand cutting, which suits standard spindle rotation and promotes stable chip flow when paired with an appropriate coolant and feed rate.

Practical advantages in the workshop and on CNC machines

The cylindrical shank with Weldon flat gives secure drive transmission for higher torque applications, reducing the risk of slippage during plunge or heavy axial loading. The long version of this cutter permits access to deeper features without sacrificing rigidity excessively, making it useful in fixtures and components where reach is critical. Combined with correct toolholder selection and machine parameters, the cutter contributes to efficient cycle times and consistent part quality. As a trusted workshop solution, it complements a range of slotting and groove-milling tasks in production and repair environments.

For recommendations on toolholder compatibility, machining parameters or to order the TECWERK slot cutter through Metav Werkzeuge—contact Metav Werkzeuge for specialist advice and local supply from Emmerich

Technical Data

• Article number: 2000866238NW
• UID: 2000866238NW
• Label: Bohrnutenfräser DIN 844 TypN D.16mm HSS-Co8 Weldon Z.3 lang TECWERK
• Manufacturer: TECWERK

Facts

• Material: HSS-Co8
• Standard: DIN 844 Typ N
• Number of flutes: 3
• Shank diameter: 16 mm
• Free-cutting length: 15 mm
• Nominal diameters: 9, 11, 13, 15 mm (tolerance h10); others e8

Special features

• Centre-cutting geometry
• Weldon shank (cylindrical shank with drive flat)
• Right-hand cutting
• Long version for extended reach
• Suitability: very good for steel and cast iron; conditionally suitable for non-ferrous metals and stainless steel
• Designed for groove and slot milling

FAQ

What materials is this slot cutter best suited for?
The TECWERK Bohrnutenfräser (DIN 844 Typ N) is very well suited to steel and cast iron, with conditional suitability for non-ferrous metals and stainless steel as stated in the technical data.

Can the cutter perform plunge cuts?
Yes, the centre-cutting design enables controlled plunge milling and makes the tool suitable for slotting operations that require axial entry.

Which shank size and clamping method are required?
The cutter features a 16 mm shank with a Weldon flat, intended for secure clamping in holders that accept Weldon-style drive flats.

How do the tolerance classes affect component fit?
Nominal diameters 9, 11, 13 and 15 mm are to h10 tolerance, with other sizes at e8, providing consistent slot widths and reliable fits in assemblies when using the specified diameters.

Is a coated version available for harder materials?
The product data indicates higher allowable strength with a coated tool (up to 1000 N/mm² versus 800 N/mm² uncoated), so choosing a coated equivalent improves performance on tougher materials.

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