Blind machine tap SUPREME 900X MF – DIN 374 C, HSSE, AlCrN coating – Koronet

The Koronet SUPREME 900X machine tap is a premium tool designed for precise production of MF fine-coil threads in structural steels, alloy steels and materials that require a stable, repeatable cutting process. Made of high-grade high-speed HSSE steel and equipped with an AlCrN coating, it provides increased wear resistance and high tool life compared to traditional TiN-coated taps.

• HSSE steel – high resistance and stability of operation

The tap is made of high-speed HSSE steel, combining good impact strength with increased resistance to torsional loads. This ensures that the tool also works stably in materials with higher strength and in the machining of fine-wound threads that require greater precision.

Premium Coating – SUPREME 900X AlCrN

The modern AlCrN-based coating is characterized by:
– high abrasion resistance,
– increased thermal stability,
– limiting chip adhesion,
– significantly longer tool life compared to TiN/TiCN coatings.

This allows for safe and stable operation at higher parameters and in more difficult steel grades.

• Spiral geometry – for ductile materials and deeper holes

C-type spiral grooves ensure efficient chip evacuation outside the hole, which is crucial for malleable machining and for threading MF fine-wound threads. This geometry reduces the risk of chip jamming and improves the quality of the thread surface.

• DIN 374 standard – slim, elongated geometry

The tap is made according to DIN 374, which is characterized by a slimmer and longer working part compared to DIN 371. This allows you to operate in places with limited space and in openings with greater depth.

• Version C – intended for specific applications

The designation C indicates a spiral chip groove that is suitable for machining malleable materials and for tapping in holes where efficient chip evacuation is required. This solution increases process safety and stability, especially with MF threads.

The SUPREME 900X DIN 374 C tap is designed for processing:

• unalloyed and structural steels,
• alloyed and heat-treated steels,
• steel with increased strength,
• malleable materials,
• materials that tend to grow.

Recommended for both CNC machine tools and precision conventional machine heads – wherever repeatability, stability and long tool life are important.