The heavy-duty high-speed steel machine tap is meant for through threads and also bottoming threads that are used in unalloyed malleable steels of up to a strength of 800 N/mm². The cobalt alloyed heavy-duty and high-speed steel tap is for threads that are used in unalloyed and alloyed steels that have a strength of up to 1000 N/mm², also in malleable cast iron and non-ferrous metals. The HSSE-Co 5 VAP stainless steel tap is for threads in unalloyed and alloyed steels up to a strength of 1000 N/mm², and stainless steel. The HSS-TiN tap consists of heavy-duty high-speed steel with a titanium nitride coating. It is for universal use on a wide range. All taps cut the thread in one operation.