4mm Gun Drill Milling Cutter HSS-Co8 3-Flute Long Cutting Length 3mm DIN 844 Weldon Shank - TECWERK

Take advantage of the combination of high-temperature resistance, precise three-flute geometry and secure Weldon clamping for dependable slotting and light plunge work; order the cutter directly via Metav Werkzeuge or consult our specialists for application-specific advice.

TECWERK Slot Drill DIN 844 Type N — Ø 4 mm, HSS‑Co, 3‑flute, Weldon shank

The TECWERK slot drill DIN 844 Type N is a long three‑flute cutter designed for precise slotting and light drilling in steels and cast materials, combining a cobalt alloy high‑speed steel body with a secure Weldon shank for stable machining.

• HSS‑Co high‑temperature resistance
• Three‑flute geometry for stable cutting
• Weldon shank with drive flat for secure clamping
• Right‑hand cutting for standard milling operations

Durable alloy for sustained performance and wear resistance

Constructed from HSS‑Co, this three‑flute cutter offers improved heat resistance and toughness compared with standard high‑speed steels. The cobalt content increases red hardness, which helps maintain cutting geometry under elevated temperatures and during prolonged cycles. For workshop planners and production engineers this translates into a longer tool life and fewer tool changes, supporting steady throughput on medium‑strength steels and cast components without frequent regrinding.

Stable cutting and plunge capability for accurate slotting

The 3‑flute design balances chip evacuation and radial support, reducing chatter when producing narrow slots. The cutter’s Weldon shank (cylindrical shank with drive flat) ensures reliable clamping in standard toolholders and collets, improving repeatability in serial work. A centre‑cut or milled tip enables modest plunging operations, so intermittent plunge and slot tasks can be performed without a separate drill, simplifying tooling setups and saving spindle time.

Application guidance for practical machining decisions

With a nominal diameter of Ø 4 mm, an overall length of 55 mm and an effective working length of 11 mm (cutting length 3 mm), the cutter is dimensioned for confined slotting and detail work. The tool is optimised for materials up to medium tensile strengths and shows very good suitability for steel and cast iron, while being conditionally suitable for some non‑ferrous alloys and stainless grades. For best results, match spindle speed and feed to material and rigidity; if process limits are unclear, Metav Werkzeuge’s advisers can suggest starting parameters and coating options to extend performance further.

Contact Metav Werkzeuge for tailored machining recommendations on TECWERK slot drills — call +49 2822 7131930 or email info@metav-werkzeuge.com to confirm suitability and availability for your production needs

Technical data

• Article number: 2000866224NW
• Product type: Slot drill
• Manufacturer: TECWERK
• Material: HSS‑Co
• Packing unit: 1

Dimensions & core data

• Diameter: 4 mm
• Overall length: 55 mm
• Cutting length: 3 mm
• Effective length: 11 mm
• Shank diameter: 6 mm
• Flutes: 3

Features

• Weldon shank / cylindrical shank with drive flat
• Right‑hand cutting
• Centre‑cut suitable for limited plunging
• Very good suitability for steel and cast iron
• Conditionally suitable for non‑ferrous metals and stainless steel

FAQ

What materials is the TECWERK slot drill 2000866224NW best suited for?
The TECWERK slot drill 2000866224NW is very well suited for steel and cast iron; it is conditionally suitable for some non‑ferrous metals and stainless steel depending on grade and cutting data.

Can the cutter be used for light plunge drilling?
Yes, the centre‑cut geometry of this slot drill allows limited plunge operations, making it suitable for combined slotting and short drilling tasks.

What clamping system is required for this cutter?
A standard Weldon‑style clamping arrangement or collet chuck that accepts a 6 mm shank with a drive flat is recommended to ensure secure, repeatable clamping.

How does the HSS‑Co material benefit production runs?
The cobalt‑alloy high‑speed steel of the TECWERK slot drill improves red hardness and wear resistance, reducing tool changes and supporting longer uninterrupted production cycles.

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