HSS-Co Metric Black Ring Spiral Point / Gun Nose Taps - DIN 371/376

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Spiral point/gun nose tool geometry (with up to 138 parameters) has been developed and optimised during long-term tests in co operation with users for the different sections of structural steel, aluminum casting, machining steel, VA steels, heat-resistant steels and tool steels. Selected hard coatings increase the range of applications. The objective of developing Swiss+Tech's 'Black Ring' Taps was the realisation of narrower tolerances and more efficient cutting times
for the thread production.

The unique general purpose properties of these taps guarantee high productivity by reducing the amount of time spent changing taps for different materials and at the same time reduces the number of taps required by the machine shop.

Swiss+Tech 'Black Ring' machine taps with their wide range of applications are the result of years of experience in metal cutting. Responsible for our developments were the following demands from our main customers

Features and Benefits
• Increased versatility for use in a range of applications
• HSS-E construction for reduced the tool changing times
• Hard coating for use with a range of materials

Typical Applications
• Through holes

• ISO Metric
• Taper lead to DIN form B
• Tapping tolerance to 6H
• Manufactured to DIN 371/376.