Machine tap DIN 371 C HSSE TiCN – for blind holes – Koronet

The DIN 371 C HSSE TiCN machine tap is a precision tool designed for internal threading in structural steels, low-alloy steels, and medium and high-strength materials. Made of high-grade high-speed cobalt steel HSSE and coated with TiCN, it provides increased wear resistance, stable operation and longer tool life in demanding machining processes.

HSSE steel – durability and stability in demanding conditions

The core of the tool is made of high-speed cobalt steel HSSE, which offers:

• high resistance to torsional loads,

• increased hardness and stability at operating temperatures,

• better abrasion resistance compared to classic HSS steel.

This ensures that the tap maintains repeatable thread quality and stable machining parameters even with long cycles and more difficult to machine materials.

TiCN coating – increased resistance and less friction

The TiCN (titanium carbonitride) coating gives the tool its characteristic dark grey hue and guarantees:

• much higher abrasion resistance than the classic TiN coating,

• lower coefficient of friction,

• better heat control in the cutting zone,

• improved surface quality of the thread made.

This solution is ideal for materials with increased strength and for processes where tool life is crucial.

C-type geometry – for blind holes

The C version of the tap has a short cut (2-3 coils) and spiral grooves, which allows:

• effective chip discharge upwards,

• safe threading of blind holes,

• work in malleable materials and structural steels.

It’s a geometry designed for accurate thread forming where chip space is limited.

DIN 371 standard – reinforced shank for precision machine work

The DIN 371 standard means:

• reinforced, slim grip,

• increased tool rigidity,

• stable tap guidance during machining,

• high repeatability of the process.

Taps made according to this standard are perfect for CNC machine tools and conventional machines.

The DIN 371 C HSSE TiCN tap is suitable for machining:

• structural steels,

• low-alloy and alloy steels,

• medium and high-strength materials,

• metals where efficient chip transport to the top is required.

It is a professional tool that ensures high durability, repeatability and process reliability both in serial and unit production.