M5 Countersink HSS 3-Flute 180° With Pilot Shank For Steel And Cast Iron - TECWERK

Take advantage of the combination of HSS construction, a 180° countersink angle and a three‑edge geometry for burr‑free, chatter‑resistant countersinking; order the tool directly via Metav Werkzeuge or consult the team for application advice.

Flat countersink DIN 373 M5 (HSS, 3‑flute) – TECWERK

The Flat countersink DIN 373 M5 (HSS, 3‑flute) is a specialised countersinking tool for producing flush seating for cylinder head and hexagon screws across steel, cast iron and non‑ferrous materials.

• HSS material, DIN 373 specification
• 180° countersink angle for flush seating
• Three cutting edges for smooth finish
• Cylindrical shank with fixed pilot pin

Precision countersinking for reliable assembly

The TECWERK countersink is engineered to deliver consistent, repeatable seating for fasteners where a clean bearing surface is required. Manufactured to DIN 373 from HSS, the geometry is optimised for through‑hole applications and specified as medium grade for reliable life and predictable wear. The three‑edge design produces an even cutting action that reduces the tendency to grab or skid, which supports dimensional consistency in assemblies and reduces rework in production environments.

Consistent surface quality and reduced secondary work

A three‑cutting‑edge configuration combines with a 180° seating angle to yield burr‑reduced results that often eliminate the need for subsequent deburring. The fixed pilot pin and cylindrical shank stabilise the tool in the hole, avoiding lateral vibration and chatter; this translates into a superior surface finish on both soft and harder materials. For workshops focused on throughput and first‑time quality, the tool’s ability to produce a clean seat reduces inspection time and downstream corrective operations.

Recommended operating parameters explained

For best results use a low cutting speed and the specified feed in machinable steels: 0.16 mm/rev in steel up to 500 N load. Low peripheral speed minimises heat build‑up and extends tool life, while the given feed provides a balance between surface finish and efficient material removal. The designation for through hole indicates the tool is optimised for applications where a pilot can run through, ensuring the fixed pilot pin secures alignment and repeatability for each cycle.

Practical integration into workshop workflows

The tool’s HSS construction and standard shank permit straightforward use in common holders and drill chucks, allowing rapid integration into existing operations without special tooling. Its suitability for steel, cast iron and non‑ferrous and light alloys makes it a versatile choice for mixed‑material production runs. When paired with controlled feed and conservative speeds, the countersink delivers predictable life and consistent seating quality, supporting stable production output and fewer rejects.

Contact Metav Werkzeuge for tailored technical advice on the TECWERK flat countersink and to request a quotation—info@metav-werkzeuge.com | +49 2822 7131930

Technical Data

• Article number: 2000865340NW
• Label: Flachsenker DIN 373 M5 Güte mittel f.DL HSS Z.3 TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Data

• Number of cutting edges: 3
• Countersink angle: 180°
• Feed in steel (up to 500 N): 0.16 mm/rev
• Grade: Medium (for through hole)

Special features

• Material: HSS
• Standard: DIN 373
• Shank: Cylindrical with fixed pilot pin
• Suitable for: steel, cast iron, non‑ferrous and light metals
• Application: Countersinking for cylinder head screws, hexagon screws and nuts
• Recommended: low cutting speed for best results

FAQ

What materials is the countersink suitable for?
The TECWERK flat countersink (SKU 2000865340NW) is suitable for steel, cast iron, non‑ferrous and light metals as stated in the product specification.

What seating angle does the tool provide?
The tool has a 180° countersink angle, designed to give flush seating for cylinder head and hexagon screws.

How many cutting edges does the countersink have and why does that matter?
This countersink features three cutting edges, which provide a smoother cutting action and help to reduce burr formation compared with two‑edge designs.

What feed and speed settings are recommended?
For steel up to 500 N a feed of 0.16 mm/rev is recommended; the tool achieves best life and finish at low cutting speeds.

Which fastener types can be accommodated?
The countersink is intended for producing seats for cylinder head screws, hexagon screws and nuts, enabling proper torque transfer and reliable assembly.

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