M20x2.5mm Machine Tap DIN 376C HSS-Co Nitride Vapourised ISO2 (6H) For Blind Holes, 16mm Shank - TECWERK

Combining HSS‑Co construction with nitrided and vapourised surface treatment and a right‑hand spiral 40°, this machine tap provides consistent, long‑life performance when cutting ISO metric blind threads in demanding stainless and heat‑resistant steels; order directly via Metav Werkzeuge or consult our specialists for application guidance.

Machine tap DIN 376C VA M20 x 2.5 mm HSS‑Co – Type VA machine tap with right‑hand spiral 40° (TECWERK)

The machine tap DIN 376C VA M20 x 2.5 mm HSS‑Co is a precision machine tap for producing ISO metric blind‑hole threads in corrosive and high‑temperature resistant steels on CNC machines and tapping heads

• HSS‑Co construction for high strength
• Nitrided and vapourised surface treatment
• Right‑hand spiral 40° for efficient chip evacuation
• ISO2 (6H) tolerance for precise metric threads

Durable material and surface treatment for longer tool life

Made from a cobalt‑alloy high‑speed steel, the HSS‑Co grade combines hardness and toughness for demanding thread cutting. The nitrided and vapourised finish reduces surface friction and increases resistance to wear and built‑up edge, which translates into extended tool life and fewer tool changes. For components produced from stainless and heat‑resistant steels, the material combination has been selected to resist the higher cutting forces typical at elevated material strengths, supporting uninterrupted batch production and lower per‑part processing costs.

Reliable chip control and reduced tap breakage in blind holes

The right‑hand spiral 40° geometry promotes controlled chip formation and evacuation when producing blind‑hole threads, where chip removal is critical. Flanks that are relief‑ground reduce radial friction and the risk of jamming during retract, so breakage rates are lowered and cycle times are stabilised. This focused chip management is particularly valuable in automated machining cells, where consistent tap behaviour prevents unscheduled stops and safeguards downstream processes.

Compliance with standards for assured thread fit and interchangeability

Thread form and tolerance follow recognised standards: the ISO metric thread is produced in accordance with DIN 13 sheet 1 and the tolerance field ISO2 (6H) is applied to achieve a tight, repeatable fit in matching bolts and assemblies. The design conforms to DIN 376C, ensuring compatibility with existing tooling lists and inspection procedures. Specified dimensions such as shank Ø 16 mm support straightforward mounting in standard machine holders, enabling quick integration into production lines without custom adapters.

Application scope and operational benefits on the shop floor

Designed as a Type VA tool for demanding alloys, the tap is suited for stainless and heat‑resistant steels with tensile strengths above 850 N/mm², where typical carbon or low‑alloy taps would wear prematurely. The Form C design and marked blue ring simplify identification and tool management in multi‑tool setups. When used as intended, the tool delivers consistent surface finish and thread accuracy, which reduces rework and improves first‑piece yield—key for quality‑sensitive assemblies.

Request the TECWERK machine tap via Metav Werkzeuge for assured supply from Emmerich and expert application advice by email at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical data

• Article number: 2000867420NW
• Designation: Machine tap DIN 376C VA M20 x 2.5 mm HSS‑Co

Facts

• Thread size: M20 x 2.5 mm
• Shank diameter: 16 mm
• Spiral angle: 40°
• Tolerance: ISO2 (6H)

Special features

• HSS‑Co material
• Nitrided and vapourised coating
• Blue ring identification
• Right‑hand spiral 40°
• Flanks relief‑ground
• Metric ISO thread to DIN 13 sheet 1
• Form C, Type VA
• For blind‑hole threads
• Suitable for stainless, acid‑ and heat‑resistant steels > 850 N/mm² tensile strength

FAQ

Is this tap suitable for blind‑hole threads?
Yes. The TECWERK machine tap DIN 376C VA M20 x 2.5 mm HSS‑Co is specifically designed for blind‑hole threads, with a right‑hand spiral 40° geometry that assists chip evacuation.

Which materials can be machined with this tap?
The tap is intended for stainless, acid‑ and heat‑resistant steels and is rated for applications above 850 N/mm² tensile strength; the HSS‑Co grade and surface treatment support these material classes.

What standard and tolerance does the tool meet?
Threads are produced to the ISO metric form per DIN 13 sheet 1 with tolerance ISO2 (6H), providing precise and repeatable fits for standard fasteners.

What shank size and machine mounting are required?
The tool has a shank Ø 16 mm and Form C design, which fits standard collets and machine holders used in automated or manual tapping operations.

How does the spiral geometry affect machining performance?
The right‑hand spiral 40° promotes controlled chip flow away from the cutting edge when forming blind‑hole threads, reducing the chance of chip packing and tap breakage.

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