How to distinguish the specifications of the tap

       The specifications of the tapered twist are distinguished by usage and size.

　　A tool that handles internal threads and has grooves in the axial direction. Also called screw attack Taps according to their shape is divided into straight taps, spiral taps and screw tip taps.

　　Straight groove tap processing is easy, the accuracy is slightly lower, the output is bigger. Generally used for ordinary lathes, drilling and tapping machine thread processing, cutting speed is slow. Spiral groove taps for CNC machining center drilling blind hole, processing speed, high precision, better chip, good for neutrality. The tip of the screw tip has a grooved groove for the machining of the through hole. Now the tool factory to provide the tap are mostly coated taps, compared with the coating taps of the service life and cutting performance has greatly improved. The design of the tapered cutting load is not reasonable, the processing quality is high, but the manufacturing cost is also high. Trapezoidal thread tap is often designed with no equal diameter.