Machine tap DIN 376 C HSS-E for blind holes – Koronet

The DIN 376 C HSS-E machine tap from Koronet is a precision tool designed for making ISO metric internal threads in blind holes. The tool is made of high-quality high-speed cobalt steel HSS-E (HSSE), which ensures stable operation, good wear resistance and high quality of the thread in workshop and production conditions.

HSS-E steel – durability and stability of the process

The tap is made of high-speed steel with the addition of cobalt (HSS-E), which is characterized by:

• increased resistance to torsional loads,

• good stability of operation at elevated temperatures,

• higher wear resistance compared to classic HSS steel.

Thanks to these properties, the tool provides even cutting, stable guidance and a longer service life while maintaining a high thread quality.

C geometry – for blind holes

The tap has a C-type, designed for:

• threading in blind holes,

• working close to the bottom of the hole,

• precise thread forming with a short inlet cone.

This geometry allows for accurate threading in a confined working space and reduces the risk of damage to the bottom of the hole.

Spiral grooves – chip control

The spiral grooves used ensure:

• effective chip discharge upwards of the hole,

• Reduced risk of chip jamming in the cutting zone

• more stable and safer operation in blind holes.

This solution improves the quality of the thread surface and increases the reliability of the machine threading process.

DIN 376 – design for machine work

Compliance with DIN 376 means:

• shortened, compact tool design,

• intended for work in machines and machine tools,

• stable guidance in machine holders.

The tap is adapted to work on CNC machine tools and conventional machines, where precision and repeatability of the process are crucial.

Application

The DIN 376 C HSS-E machine tap is designed for machining:

• structural steels,

• low-alloy and alloy steels,

• medium-strength materials,

• Parts that require threading in blind holes.

The tool ensures stable operation, high thread quality and reliability in everyday production and workshop applications.