12.4mm Countersink 90° Three-Point, HSS Extended Shank, 3 Flutes, For Steel Casts Non-Ferrous, Long - TECWERK

Take advantage of HSS construction, a 90° cutting angle and a 3‑flute geometry for clean, rattle‑free chamfers; the extra‑long cylindrical shank ensures access to deep holes and reliable surface quality. Order directly via Metav Werkzeuge or consult the specialists for application advice.

TECWERK Countersink DIN 335 C — 90° Ø 12.4 mm, HSS, extra‑long, 3‑flute

TECWERK Countersink DIN 335 C Ø 12.4 mm is an extra‑long high‑speed steel countersink designed for precise deburring and chamfering of drilled holes in steel, cast and non‑ferrous metals.

• HSS according to DIN 335 C, 3‑flute geometry
• 90° countersink for precise chamfering
• Extra‑long cylindrical shank for deep access
• Rattle‑free cutting in steel and non‑ferrous metals

Precise chamfers with high material removal efficiency

The 90° cutting angle combined with the 3‑flute design provides a stable profile for reliable chamfer geometries and consistent surface finish. Manufactured from HSS, the tool maintains edge stability under heat and load, so abrasion and tool wear are reduced compared with softer alternatives. Because the design meets DIN 335 C parameters, the cutting geometry is standardised for reproducible results across batches, which supports predictable cycle times and improves process planning in production environments.

Extended reach for deep or recessed holes

An extra‑long cylindrical shank gives clear functional benefits when working on deep components or recessed workpieces. The extended length reduces the need for adaptors and multiple setups, allowing a single tool to reach areas that would otherwise require longer changeover times. The cylindrical shank ensures secure clamping in standard tool holders and drill chucks, contributing to runout stability and repeatable centring when countersinking in bores.

Versatile material compatibility and recommended feed

The countersink is suitable for steel, cast components and non‑ferrous metals, making it a flexible choice for mixed‑material workshops. For steels under moderate cutting resistance (up to 500 N), a feed of 0.14 mm/rev is recommended to balance cutting efficiency and surface integrity; this feed value supports a rattle‑free cut while keeping burr formation to a minimum. For other materials, adjusting feed and speed according to workpiece hardness and machine rigidity will achieve optimal results.

Robust geometry, simple handling and workshop integration

Three cutting edges deliver smoother chip evacuation and less vibration than two‑flute tools, resulting in a rattle‑free operation that improves surface quality and extends tool life. The combination of standardised geometry and an extra‑long build reduces tooling complexity across the tool crib and simplifies ordering. Integration into existing setups is straightforward thanks to the cylindrical shank format, which is compatible with conventional holders and chucks used in general workshop and light industrial environments.

Contact Metav Werkzeuge for application guidance and secure the TECWERK extra‑long HSS countersink for dependable, high‑quality chamfering — specialists are available to advise on feeds, speeds and integration into existing tooling systems

Technical data

• Article number: 2000865392NW
• Label: Kegelsenker DIN 335C 90Grad D.12,4mm HSS ü.-lang Z.3 TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Diameter: 12.4 mm
• Countersink angle: 90°
• Number of flutes: 3
• Feed in steel up to 500 N: 0.14 mm/rev
• Shank type: cylindrical
• Length: extra‑long

Special features

• Material: HSS
• Standard: DIN 335 C
• Extended shank for deep access
• Application: countersinking and deburring of holes
• Rattle‑free cutting due to 3 cutting edges
• Suitable for steel, cast and non‑ferrous metals

FAQ

What materials can this countersink be used on?
The TECWERK Countersink DIN 335 C Ø 12.4 mm is suitable for steel, cast materials and non‑ferrous metals, offering versatile performance across common workshop substrates.

How does the 3‑flute geometry affect cutting behaviour?
A three‑flute design provides smoother engagement and improved chip control, producing a rattle‑free cut that enhances surface finish and reduces burr formation compared with two‑flute variants.

What feed rate is recommended for steel?
For steels with cutting resistance up to 500 N, a feed of 0.14 mm/rev is recommended for balanced material removal and a consistent chamfer quality when using the TECWERK countersink.

Is the tool compatible with standard chucks and holders?
Yes — the cylindrical shank format is compatible with conventional drill chucks and tool holders, allowing straightforward use in standard workshop equipment.

Can the extra‑long shank reduce setup changes?
The extra‑long build is designed to reach recessed bores and deep features without additional extensions, which can reduce setup time and the need for multiple tool changes when machining complex parts.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com