Machine Taps are High Speed Steel Hand Taps with straight flutes are designed for general purpose hand tapping or in production machines where ground thread accuracy and performance are required. They are suitable for tapping most materials in through or blind holes. Hand taps retain chips in the flutes during use and work best on materials that produce chips and the swarf breaks easily. We Also Supply Taps with Cobalt. Taps are used to cut and restore internal threads precisely. A tap is used to form the female component of the assembly, as in the case of a nut or socket.