12.4mm Countersink 90° HSS Extra-Long Shank 3-Flute Cylindrical Shank, For Steel/Grey Cast Iron/Non-Ferrous - TECWERK

Benefit from the combination of HSS construction, a 90° cutting angle and an extra-long shank to achieve precise, burr-free countersinking in steel and non-ferrous metals; order directly via Metav Werkzeuge or consult our specialists for application guidance.

TECWERK 90° Countersink DIN 335 C, 12.4 mm HSS (Extra‑long) — Countersink, 3‑flute, Cylindrical shank

A TECWERK 90° countersink DIN 335 C 12.4 mm HSS extra‑long designed for accurate countersinking and deburring of holes in steel, cast iron and non‑ferrous metals.

• HSS construction for extended tool life
• 90° cutting angle for standard countersinks
• Extra‑long shank for deeper reach
• Three‑flute design for rattle‑free cutting

Precision cuts for consistent seating and finishing

The high‑speed steel (HSS) body conforms to DIN 335 C, delivering a balance of toughness and wear resistance that supports repeated countersinking operations. The 90° cutting angle provides the standard seating form for most head countersinks, ensuring consistent fastener fitment. The three‑flute configuration produces a rattle‑free cut, reducing chatter and leaving a cleaner chamfer compared with two‑flute designs; this improves hole presentation and reduces the need for secondary deburring.

Reliable performance across common workshop materials

This countersink is specified for use with steel, cast iron and non‑ferrous metals, making it suitable for general workshop and maintenance tasks as well as small‑batch production. The tool’s performance guideline indicates a feed in steel up to 500 N of 0.14 mm/rev, which gives a practical benchmark for setting feed rates on manual machines and lathes; matching feed to cutting conditions helps to avoid premature wear and to maintain consistent chamfer geometry. The solid HSS geometry tolerates intermittent cutting conditions often found in repair and retrofit work.

Design that reaches where standard tools cannot

An extra‑long shank extends reach into deeper or recessed features without compromising stability, while the cylindrical shank ensures reliable clamping in standard collets and chucks. The extended length is particularly useful when countersinking from the non‑accessible side or when using jigs and fixtures that limit tool approach. The compact 12.4 mm flute diameter and well‑balanced three‑edge geometry reduce radial forces, supporting steadier operation on bench drills and small machines.

Practical integration and maintenance in everyday use

The tool’s straightforward geometry and standard shank make it easy to integrate into existing tool setups and changeover routines. The absence of specialised coatings keeps reconditioning straightforward for workshops that prefer in‑house tool resharpening; the HSS substrate also tolerates minor resharpening without complex procedures. For production planners and maintenance technicians, the combination of DIN compliance, robust material choice and simple clamping makes this a practical choice for both ad‑hoc repairs and regular countersinking operations.

Contact Metav Werkzeuge for tailored application advice on the TECWERK 90° countersink and to confirm suitability for specific production requirements, delivered from Emmerich to the workbench.

Technical Data

• Article number: 2000865392NW
• Description: TECWERK 90° countersink DIN 335 C, 12.4 mm, HSS, extra‑long, 3 flutes, cylindrical shank
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Material: HSS
• Diameter: 12.4 mm
• Angle: 90°
• Flutes: 3
• Feed in steel (up to 500 N): 0.14 mm/rev
• Shank type: Cylindrical
• Length: Extra‑long

Special features

• DIN 335 C standard design
• Extra‑long shank for reach
• Three‑flute geometry for vibration reduction
• Intended for steel, cast iron and non‑ferrous metals
• Suitable for countersinking and deburring of holes

FAQ

What materials can be machined with this countersink?
The TECWERK 90° countersink is intended for steel, cast iron and non‑ferrous metals, covering most standard workshop applications.

What is the recommended feed rate for use in steel?
The specification indicates a feed in steel up to 500 N of 0.14 mm/rev, which serves as a practical starting point for setting feeds on manual and small CNC machines.

How many cutting edges does the tool have and what advantage do they offer?
The tool has three flutes, providing a rattle‑free cut and improved surface finish compared with two‑flute variants, which helps reduce the need for subsequent deburring.

Which standard does the countersink conform to?
The geometry follows DIN 335 C, providing compatibility with established countersinking dimensions and ensuring predictable seating for fasteners.

Is the shank compatible with standard chucks and collets?
Yes, the cylindrical shank is suitable for standard chucks and collets commonly used in drills and light machining centres.

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