Machine and hand taps are cutting the common thread of a standard tap. The Chinese are accustomed to manufacture high precision, high-speed steel teeth called taps machine taps, the carbon tool steel or alloy tool steel rolling elements (or incisors) tap called hand taps, in fact both the structure and It works basically the same. Typically, it taps consists of the working portion and a shank. Working part is divided into a cutting portion and calibration part, the former mill has Cone, responsible for cutting the work, which is calibrated to the size and shape of the thread.