12mm Slot Drill DIN 844 Type W HSS-Co8 Long 3-Flute Centre Cut 40° Helix 11.5mm Relief, Weldon Shank - TECWERK

Take advantage of a cobalt HSS (HSS‑Co8) construction, centre‑cutting three‑flute geometry and a long design for reliable slot milling in aluminium and other non‑ferrous metals; order the slot drill (DIN 844, Type W, Ø 12 mm) directly via Metav Werkzeuge or ask our consultants if needed.

Slot drill DIN 844 Type W, Ø 12 mm — HSS‑Co8, Weldon shank by TECWERK

The slot drill DIN 844 Type W is a long, three‑flute milling cutter designed for slotting and plunge operations in long‑chip aluminium and other non‑ferrous metals.

• HSS‑Co8 for high wear resistance
• Centre‑cutting for plunge operations
• Long version for deep slotting
• Weldon shank with driving flat

Precision and performance for long‑chip aluminium milling

The long three‑flute geometry provides consistent chip evacuation and reduced vibration when machining long‑chip materials. Thanks to the HSS‑Co8 substrate and a 40° helix, the cutter sustains cutting edge integrity during demanding runs, which translates into stable slot profiles and fewer burrs. For production environments where aluminium alloys and other non‑ferrous metals are predominant, this tool offers a balance of durability and reliable chip control that helps maintain cycle times and surface quality.

Plunge capability and versatile cutter design

Equipped with a centre‑cutting geometry, the tool enables direct plunging as well as conventional slotting, simplifying tool routines and reducing the need for secondary operations. The three‑flute arrangement increases core strength compared with two‑flute variants while maintaining good chip space for aluminium work. The long version is particularly useful for deep grooves or applications where extended reach is required, keeping setup changes to a minimum and improving overall process efficiency.

Secure, vibration‑resistant mounting for consistent results

The cylindrical shank with a driving flat (Weldon style) ensures positive clamping in holders and collets, preventing slip during heavy feed rates and maintaining concentricity over longer cuts. The 12 mm shank diameter matches standard toolholders and contributes to rigidity, while the 11.5 mm effective cutting/relief length is ground to provide a clean cutting geometry. Using a Weldon clamping system reduces the risk of tool rotation in the holder, supporting repeatable, high‑quality results in batch and single‑part machining.

Application focus and material suitability

Specifically tailored for non‑ferrous metals, the cutter is very well suited to aluminium machining and similar long‑chip materials, delivering smooth surface finishes and efficient chip formation. The combination of cobalt‑enhanced HSS and the chosen helix angle makes it a reliable choice for workshops and small production lines that require a versatile slotting tool able to cope with both light and continuous operations.

Contact Metav Werkzeuge for application advice or to secure stock of the TECWERK slot drill (DIN 844 Type W, 12 mm) — email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss suitability for specific machining tasks and order availability

Technical data

• Article number: 2000866306NW
• Item name: Slot drill DIN 844 Type W, Ø 12 mm, HSS‑Co8, Weldon, 3 flutes, long

Facts

• Diameter: 12 mm
• Shank Ø: 12 mm
• Cutting / relief length: 11.5 mm
• Helix angle: 40°
• Flutes: 3

Special features

• Material: HSS‑Co8 (cobalt high‑speed steel)
• Centre‑cutting (plunge capable)
• Weldon cylindrical shank with driving flat
• Short free grind / cutting form: 11.5 mm
• Designed for long‑chip aluminium and non‑ferrous metals
• Right‑hand cutting

FAQ

What materials is this slot drill suitable for?
The TECWERK slot drill (DIN 844 Type W, Ø 12 mm) is designed primarily for aluminium and other non‑ferrous metals and is described as very well suited for these materials.

Can the cutter be used for plunge operations?
Yes, the centre‑cutting geometry of this slot drill enables plunge cutting as well as conventional slot milling.

What is the shank size and mounting style of the cutter?
The tool has a 12 mm shank diameter and a Weldon style driving flat for secure clamping in compatible holders.

How does the three‑flute design affect performance?
The three‑flute geometry increases core strength and improves surface finish while maintaining adequate chip space for long‑chip materials like aluminium.

Which standard and material grade does the cutter conform to?
The cutter is produced to DIN 844 specification and is manufactured from HSS‑Co8, a cobalt‑alloyed high‑speed steel for enhanced wear resistance.

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