4mm Solid Carbide NC Spot Drill 120° Tip 12mm Spiral, Cylindrical Shank DIN 6535-HA - TECWERK

Take advantage of precise positioning and rapid single‑pass centring thanks to solid‑carbide construction and a 120° point angle; order the NC spot drill D.4 mm directly via Metav Werkzeuge or ask our consultants if needed.

NC spot drill D.4 mm solid‑carbide 120° by TECWERK — centre and chamfer in one pass

The NC spot drill D.4 mm is a solid‑carbide spotting tool designed for position‑accurate and fast spot‑drilling on NC machines and boring mills, enabling centring and chamfering of tapped holes in a single operation.

• Solid‑carbide construction
• 120° centring and chamfering in one pass
• Cylinder shank DIN 6535‑HA
• Suitable for high‑strength steels and stainless

Greater accuracy through robust construction

The choice of solid‑carbide body provides high rigidity and thermal stability, which translates into consistent hole positioning and longer tool life. With a 120° point angle, the tool reliably centres the spindle before plunge drilling and creates a controlled chamfer for tap engagement. The h6 tolerance on the shank supports repeatable concentricity when used with precision toolholders, reducing runout and improving hole quality on repeated cycles.

Faster cycles on NC machines and boring mills

Designed for machining centres and boring units, this centre cutter combines centring and chamfering to reduce fixturing and secondary operations. The ability to perform both tasks in one pass shortens cycle times and lowers setup costs, while the specified feed performance — 0.06 mm/rev in steel up to 800 N — helps maintain consistent chip removal and surface finish during automated production runs. Such efficiency supports throughput increases without compromising repeatability.

Broad material compatibility for versatile use

Engineered for demanding materials, the tool is particularly effective on high‑strength steels, steel castings and stainless steels, yet it also handles grey cast iron and non‑ferrous metals. The carbide grade and geometry balance wear resistance with sharpness, enabling reliable centring in tougher alloys and reduced burr formation. For workshops processing mixed batches, this versatility reduces tool changes and simplifies inventory.

Convenient mounting and process reliability

A cylinder shank manufactured to DIN 6535‑HA with h6 tolerance ensures secure seating in standard collets and chucks, aiding quick tool changes and stable machining. The tool’s 12 mm spiral length and 50 mm overall length provide adequate engagement for positioning without excessive overhang. The right‑hand cutting geometry matches standard spindle rotation, supporting smooth chip flow and consistent entry behaviour for precise tap preparation.

For reliable centring and chamfering with TECWERK solid‑carbide technology, contact Metav Werkzeuge to specify the correct variant for the application or to discuss batch requirements — eMail info@metav-werkzeuge.com or call +49 2822 7131930

Technical details

• Article number: 2000865820NW
• Norm: DIN 6535‑HA
• Manufacturer: TECWERK
• Product type: NC spot drill
• Material: solid‑carbide (VHM)
• Shank type: cylinder shank
• Cutting direction: right‑handed
• Packaging unit: 1

Core data

• Diameter: 4 mm
• Overall length: 50 mm
• Spiral length: 12 mm
• Point angle: 120°
• Tolerance: h6
• Feed in steel up to 800 N: 0.06 mm/rev

Applications & features

• Solid‑carbide construction
• Cylinder shank to DIN 6535‑HA
• Right‑hand cutting
• Positions and spot‑drills with centring and chamfering in one pass
• Suitable for high‑strength steels, steel castings, grey cast iron, stainless steels and non‑ferrous metals

FAQ

What materials can be machined with this tool?
The TECWERK NC spot drill D.4 mm is suitable for high‑strength steels, steel castings, grey cast iron, stainless steels and non‑ferrous metals.

How should the tool be mounted for best concentricity?
Mount the cylinder shank in a precision collet or chuck that accepts DIN 6535‑HA shanks with h6 tolerance to ensure minimal runout and stable operation.

Can centring and chamfering really be done in one pass?
Yes — the geometry of the TECWERK solid‑carbide spot drill was developed to perform single‑pass centring and chamfering, reducing setups and cycle time.

What feed rate is recommended for steel?
The tool achieves the specified performance at a feed of 0.06 mm/rev in steel up to 800 N, providing consistent chip evacuation and finish.

Is this tool suitable for automatic NC production?
The NC spot drill D.4 mm is intended for NC machines and boring mills and is optimised for automated workflows due to its robust carbide construction and standardised shank.

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