16.5mm Countersink DIN 335C 90° HSS 3-Flute Extended Shank, Long Length - TECWERK

Benefit from the combination of HSS construction, a 90° cutting angle and a three‑flute, chatter‑free geometry for precise countersinking and reliable deburring; order via Metav Werkzeuge or consult the technical advisors for process integration.

TECWERK Countersink DIN 335 C — HSS, Ø 16.5 mm, extra‑long

TECWERK Countersink DIN 335 C for precision countersinking and deburring in steel, cast iron and non‑ferrous metals; extra‑long shank for deep or hard‑to‑reach holes.

• HSS, DIN 335 C design with 90° angle
• Three‑flute geometry for vibration‑free cutting
• Extra‑long cylindrical shank for deep countersinking

High‑performance countersinking for industrial workflows

The HSS body manufactured to DIN 335 C delivers consistent cutting performance across a range of workshop and production tasks. The 90° cutting angle provides the standard seat for most fasteners while the three‑flute design ensures a chatter‑free cut, improving surface finish and reducing the need for rework. Intended for use on steel, cast iron and non‑ferrous metals, this countersink supports efficient hole preparation and deburring in repetitive production cycles.

Geometry and material that extend tool life and precision

A cylindrical shank and extra‑long overall length enable secure clamping in standard drill chucks and holders while reaching deeper countersink positions. The three‑flute profile reduces radial forces and vibration, which contributes to dimensional stability of the chamfer and prolongs tool life. Feed guidance is specified with a nominal value of 0.14 mm/rev in steel under a cutting force up to 500 N, giving a measurable basis for process parameter planning.

Productivity gains through reduced secondary operations

The combination of HSS hardness and the optimised flute geometry leads to faster, cleaner deburring and a reduced rate of burr formation at the hole edge. Fewer secondary finishing steps are required, which shortens cycle time and lowers overall process cost per part. The tool is well suited to integration in machining centres and handheld drilling operations where repeatable chamfer quality is required.

Practical integration and handling considerations

Mounting on standard chucks is facilitated by the cylindrical shank; the extra‑long configuration should be supported appropriately to avoid deflection in higher‑moment applications. The countersink is specified for countersinking and deburring tasks and is best applied within the stated feed guidelines to maintain the chatter‑free behaviour. Regular inspection and resharpening cycles, when required, will preserve the HSS cutting edge and ensure continued process reliability.

For precise countersinking in demanding applications, request process advice or place an order with Metav Werkzeuge — contact info@metav-werkzeuge.com or call +49 2822 7131930 to discuss integration of the TECWERK countersink into production workflows

Technical data

• Article number: 2000865393NW
• Name: Kegelsenker DIN 335 C, Ø 16.5 mm, HSS, extra‑long, 3 flutes
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Diameter: 16.5 mm
• Countersink angle: 90°
• Number of flutes: 3
• Feed in steel up to 500 N: 0.14 mm/rev
• Shank: cylindrical
• Standard: DIN 335 C

Special features

• Material: HSS
• Extra‑long overall length
• For countersinking and deburring holes
• Suitable for steel, cast iron and non‑ferrous metals
• Chatter‑free cutting due to three‑flute geometry
• Designed for use with standard drill chucks and holders

FAQ

What materials can be processed with this countersink?
The TECWERK countersink is suitable for steel, cast iron and non‑ferrous metals, offering reliable deburring and chamfering performance across these materials.

What is the recommended feed for use in steel?
A feed of 0.14 mm/rev is specified for operation in steel at cutting forces up to 500 N for the TECWERK countersink to maintain stable, chatter‑free cutting.

How is the tool held in the machine?
The tool features a cylindrical shank for secure clamping in standard chucks and holders; the extra‑long configuration requires suitable support to avoid deflection.

Is the geometry suitable for preventing vibration?
Yes, the three‑flute geometry of this TECWERK countersink is designed to reduce vibration and produce a chatter‑free surface finish.

Can the countersink be used in handheld drills as well as machining centres?
The countersink is compatible with handheld drilling and machining‑centre applications provided the clamping and feed conditions match the specified guidance for safe and accurate use.

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