20mm NC Spot Drill Solid Carbide 90° Right-Hand Cylindrical Shank h6, DIN 6535-HA - TECWERK

Combine solid carbide construction with a 90° point angle and a DIN shank for fast, position-accurate centring and chamfering in a single pass. Benefit from secure clamping and h6 tolerance for repeatable hole quality—order via Metav Werkzeuge or consult our specialists for application advice.

TECWERK NC spot drill D20 mm (Solid carbide) – 90° point, DIN 6535-HA shank

The NC spot drill D20 mm is a purpose-built centre-drilling tool for position-accurate and rapid centring and chamfering of threaded holes on NC machines and boring mills.

• Solid carbide VHM for high rigidity
• 90° point angle for precise centring
• DIN 6535-HA cylindrical shank, tolerance h6
• Suitable for high-strength steels and stainless

Accuracy and secure clamping for repeatable holes

The combination of a DIN 6535-HA cylindrical shank and h6 tolerance ensures consistently low runout and reliable clamping in standard toolholders. The tool’s 20 mm diameter, 100 mm overall length and 35 mm spiral length are optimised for stable engagement and straight, repeatable hole starts on automated equipment. These mechanical specifications reduce eccentricity at the bore entry, which translates directly into higher first-pass yields and less rework in production environments. The emphasis on dimensional conformity supports tight process control across batches.

Built for demanding materials and efficient machining

Manufactured from VHM (solid carbide), the centre cutter is engineered for demanding workpieces such as high-strength steels, steel castings, grey cast iron, stainless steels and various non-ferrous metals. The 90° point angle facilitates both accurate centring and light chamfering in one operation, while right-hand cutting geometry provides predictable chip flow. Under a cutting resistance of up to 800 N a feed of 0.16 mm/rev in steel is recommended, giving a clear basis for process planning and tool life optimisation. This technical profile makes the tool particularly suitable where cycle time and dimensional accuracy are decisive.

Reduced cycle time and practical workshop advantages

By combining centring and chamfering in a single pass the tool significantly lowers set-up time and reduces handling between operations, producing measurable gains in throughput. The solid carbide construction and precise geometry maintain cutting stability over repetitive cycles, supporting consistent surface quality at the hole entry. Compatibility with common NC spindles and boring mills simplifies integration into existing lines, while the standardised shank and tolerance promote interchangeability with minimal adjustment. These operational benefits are aimed at keeping production steady and predictable.

For reliable, high-precision centre drilling choose TECWERK tools — contact Metav Werkzeuge for procurement and technical consultation at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 2000865809NW
• Standard: DIN 6535-HA
• Label: NC spot drill D20 mm VHM 90° TECWERK
• Manufacturer: TECWERK

Core specifications

• Diameter: 20 mm
• Overall length: 100 mm
• Spiral length: 35 mm
• Point angle: 90°
• Cutting direction: right-hand cutting
• Tolerance: h6
• Packaging unit: 1
• Feed in steel (up to 800 N): 0.16 mm/rev

Materials & special features

• Solid carbide (VHM)
• Cylindrical shank to DIN 6535-HA
• Position-accurate and fast spot drilling
• Centring and chamfering in one pass
• Particularly suitable for high-strength steels
• Suitable for steel castings and grey cast iron
• Suitable for stainless steels and non-ferrous metals
• Designed for NC machines and boring mills

FAQ

Is this tool suitable for stainless steel?
The TECWERK NC spot drill D20 mm is specified for use with stainless steels and other non-ferrous metals, offering stable performance thanks to its solid carbide construction.

Can the tool centre and chamfer a threaded hole in one operation?
Yes, the 90° point angle is designed to enable centring and chamfering in a single pass, reducing cycle time and setup changes.

What shank standard is required for clamping?
A cylindrical shank to DIN 6535-HA with h6 tolerance is required for correct clamping and minimal runout.

What cutting data should be used as a reference?
For steel under a cutting resistance up to 800 N a reference feed of 0.16 mm/rev is provided in the technical data for process planning.

Which SKU identifies this item for ordering?
The tool is listed under SKU 2000865809NW (TECWERK NC spot drill D20 mm).

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