Spot spiral groove tap high speed steel tap durable ST8 * 1.25

Spot spiral groove tap high speed steel tap durable ST8 * 1.25

Different from the straight slot taps, the straight slot taps have straight grooves, while the spiral slot taps have spiral grooves.

When tapping, they can easily discharge the chip out of the hole with the rising and rotating function of their spiral grooves,

so as to prevent the chip from remaining or blocking in the groove, resulting in the broken tap and the split edge. Therefore,

the spiral slot can increase the service life of the tap and cut a higher one The cutting speed of precision internal thread is

faster than that of straight slot tap

The special screw tap for screw sleeve is used to process and install the internal thread of steel wire screw sleeve,

also called st screw tap, screw sleeve screw tap. It is divided into straight groove tap,

spiral groove tap and extrusion tap according to the shape and the way of forming thread.

The chip holding groove of screw tap is spiral, which can be divided into left-hand and right-hand rotation according to the different rotation direction. When the left-hand spiral groove tap is tapped, the chips are discharged downward, which is suitable for through-hole; when the right-hand spiral groove tap is tapped, the chips are discharged upward, which is suitable for blind hole.