150mm Countersink Set DIN 373 HSS 3-Flute Spiral With Fixed Pilot, M3–M10, 6-Piece - TECWERK

Taking advantage of HSS robustness and the precise three-cut, spiral-fluted geometry ensures dependable countersinking across standard machine screws M3–M10; combined with the fixed pilot pin and cylindrical shank, this results in reduced rework and smoother production runs. Order the set directly via Metav Werkzeuge or consult the specialists for application advice.

TECWERK Countersink Set DIN 373 — HSS, M3–M10, three-cut

TECWERK Countersink Set DIN 373 is a precision-engineered HSS countersink range for clean chamfering and deburring of machine screws from M3 to M10, designed for reliable centring and repeatable results in workshop and industrial environments.

• HSS construction for enduring cutting performance
• Spiral-fluted, three-cut geometry for clean chips
• Fixed pilot pin and cylindrical shank for centring
• Packed in a durable plastic case for organised storage

Consistent performance for varied screw sizes

The set is manufactured from HSS, a high-speed steel alloy that combines hardness and toughness for extended tool life under standard countersinking loads. Conforming to DIN 373 indicates a standardised countersink geometry that matches common screw head profiles, which simplifies tool selection across multiple operations. The wide M3–M10 range supports typical fastening sizes, reducing the need for frequent tool changes and improving throughput on repetitive tasks.

Improved surface finish and chip control reduce rework

A three-cut flank geometry, combined with the spiral-fluted profile, produces smaller, consistent chips and promotes effective chip evacuation. This geometry leads to a finer chamfer and decreases the likelihood of burring, so fewer touch-ups are required after machining. The fixed pilot pin ensures accurate centring in pre-drilled holes, translating into uniform countersinks and predictable assembly fits — a direct gain in process reliability.

Compatibility and practical workshop organisation

The cylindrical shank is compatible with standard collets and drill chucks, allowing straightforward integration into existing machines and cordless drills where appropriate. Supplied in a secure plastic cassette, the components remain organised and protected, which shortens setup times and preserves cutting edges between jobs. The construction and packaging make the set suitable for routine maintenance work, small-batch production and general workshop use where consistent countersinking is required.

For precision countersinking with proven HSS durability, request the TECWERK DIN 373 countersink set from Metav Werkzeuge or contact our technical advisors at info@metav-werkzeuge.com / +49 2822 7131930 for tailored recommendations and ordering assistance

Technical Data

• Article number: 2000865330NW
• Item: Flachsenkersatz DIN 373 M3-M10 fein f.DL HSS Z.3 Ku.-Kass.TECWERK
• Manufacturer: TECWERK
• Packaging unit: 1

Facts

• Thread range: M3–M10
• Cutting edges: 3
• Content: 6 pieces
• Shank type: cylindrical

Special features

• HSS material
• Spiral-fluted geometry
• Fixed pilot pin for centring
• Compliant with DIN 373
• Packaging: plastic cassette

FAQ

What materials is this countersink set suitable for?
The TECWERK countersink set is manufactured in HSS and is suitable for standard ferrous and non-ferrous workshop materials typically encountered when countersinking machine screws in general engineering.

Can the countersinks be used in handheld drills?
Yes, the cylindrical shank and fixed pilot pin allow use in standard drill chucks; the components are designed for both machine and workshop handheld applications where appropriate safety and speeds are observed.

What advantage does the three-cut spiral geometry provide?
The three-cut, spiral-fluted design on the TECWERK DIN 373 countersinks produces controlled chip formation and consistent surface finish, reducing the need for secondary deburring operations.

How does the fixed pilot pin affect accuracy?
The fixed pilot pin centres the tool in pre-drilled holes, ensuring repeatable alignment and uniform countersink depth across batches when using the TECWERK countersink set.

Is the set organised for easy storage and transport?
Yes, the set is supplied in a plastic cassette that keeps the tools protected and organised, facilitating quick tool changes and preserving cutting edges.

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