External diameter of the tap used. Thread forming is not considered. For forms, calculate values with a factor of 1.7.
The appropriate depth of thread in your machining.
The cutting speed depends on the composition and strength of the material and the tool material used.
Rotation on the spindle.
Pitch of the thread per revolution of the spindle.
Machine efficiency refers to the efficiency of energy transfer in the machine. The base value is less than 1.
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