4mm Mini Keyseat Cutter HSS-Co8 3 Flute Short Weldon, Zylindrical Shank 6mm - TECWERK

Take advantage of a compact, rigid design combined with HSS‑Co8 performance and a Weldon shank for reliable clamping in short‑reach machining. The combination of a Ø4 mm diameter, 3‑flute geometry and a centre cut ensures precise slotting in steels and cast iron; order directly via Metav Werkzeuge or consult our specialists for confirmation.

Mini slot cutter Ø4 mm, HSS‑Co8, Weldon shank — 3‑flute short cutter (TECWERK)

A Mini slot cutter Ø4 mm HSS‑Co8 designed for precision slotting and shallow milling in steels and cast iron, ideal where rigidity and repeatable starts are required

• HSS‑Co8 with centre cut for plunge starts
• 3‑flute geometry for smooth chip evacuation
• Weldon shank Ø6 mm for secure clamping

Precise slotting where small tolerances matter

The compact design and Ø4 mm core make this tool particularly suited to tight spaces and fine components. With a cutting length of 3 mm and a short overall length of 38 mm, the cutter reduces overhang and therefore vibration, delivering consistent slot width and axial runout control. The integrated centre cut allows controlled plunging into the workpiece, so holes and starting points can be created without a separate pilot; the tool thus simplifies workflows where small, accurate slots are required. The three cutting edges balance feed stability with surface finish, making the tool a pragmatic choice for precision tasks.

Material capability and what the alloy brings to the process

Manufactured from HSS‑Co8, the tool benefits from cobalt‑enriched high‑speed steel properties: improved hot hardness and wear resistance compared with standard HSS. That makes the cutter very well suited to machining steel and cast iron, with an effective range up to approximately 800 N/mm² tensile strength. For non‑ferrous metals and stainless steels, the tool is conditionally suitable; selection of cutting data and coolant will determine the final performance. The choice of HSS‑Co8 gives a balance between toughness and temperature resistance, offering practical durability for everyday production without necessitating carbide for every task.

Secure clamping and geometry tuned for short reaches

The Weldon shank with a Ø6 mm diameter and drive flat ensures firm fixation in set‑screw holders or equivalent chucks, eliminating slip under intermittent axial loads. The short overall length improves stiffness, which directly benefits dimensional stability and surface quality at the small diameters typical for this family of cutters. The 3‑flute geometry helps clear chips efficiently while maintaining radial support, and the right‑hand cutting orientation matches conventional spindle rotations used in most vertical and horizontal milling set‑ups. These elements together reduce chatter risk and prolong usable tool life in short‑reach operations.

Practical application advice for reliable results

This cutter is intended for milling slots, keyways or small recesses in component work where precision and repeatability are required. Because axial engagement is limited by the 3 mm cutting length, progressive feeds for deeper features are recommended via multiple shallow passes. Use of appropriate coolant or cutting fluid will help control temperatures when machining tougher steels, improving edge life for the HSS‑Co8 alloy. The tool arrives as a single unit per packaging and integrates easily into multi‑tool set‑ups where compact, rigid cutters are preferred for high‑quality finishes.

For precision slotting in compact components, choose the TECWERK short 3‑flute mini slot cutter and contact Metav Werkzeuge for supply and application advice — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: 2000866008NW
• Brand: TECWERK
• Product type: Mini slot cutter
• Material: HSS‑Co8
• Shank type: Weldon shank (drive flat)
• Packaging unit: 1

Facts

• Diameter: 4 mm
• Overall length: 38 mm
• Cutting length: 3 mm
• Shank Ø: 6 mm
• Flutes: 3
• Cutting direction: Right‑hand

Special features

• Centre cutting for plunge capability
• Short design for increased rigidity
• Very good suitability for steel
• Very good suitability for cast iron
• Conditional suitability for non‑ferrous metals
• Conditional suitability for stainless steel
• Suited for materials up to ~800 N/mm²

FAQ

What materials is this cutter best suited for? The TECWERK mini slot cutter is very well suited to steel and cast iron; it is conditionally suitable for non‑ferrous metals and stainless steel and performs effectively up to about 800 N/mm² tensile strength.

Can the tool be used for plunge cutting? Yes, the cutter features a centre cut, which permits controlled plunging into the workpiece for shallow starts; the effective plunge depth is limited by the 3 mm cutting length.

How is the cutter secured in the machine? Clamping is via the Weldon shank with a Ø6 mm drive flat, intended for secure fixation in set‑screw holders and compatible collet systems that accept Weldon‑style shanks.

How many pieces are supplied per package? The tool is supplied as a single unit per packaging (packaging unit: 1).

What advantages does HSS‑Co8 offer for this application? The HSS‑Co8 composition increases hot hardness and wear resistance compared with standard HSS, providing a robust compromise between toughness and thermal resistance for demanding short‑reach machining.

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