Due to the different relationships between the shape of the object being cut and the position of the tapping teeth, when using NC, MC and other special tapping machines for tapping teeth, the length of the general wire tapping is sometimes insufficient, so an extended wire tapping is needed. There are generally three types of elongated thread attacks: elongated straight groove [LS-HT], elongated spiral [LS-HC-SP], and elongated tip [LS-HC-PO].
·Screw tapping accuracy grade: YAMAWA P grade
·Screw tapping material: HSS-E
·Number of teeth in the cutting edge: LS-HT - [1.5 teeth/5 teeth], LS-HC-SP - [2.5 teeth], LS-HC-PO - [5 teeth]
·Length: 70mm/100mm/120mm/150mm/200mm
·Suitable for cutting materials: carbon steel, alloy steel, copper, aluminum, zinc and other light alloys with tensile strength below 750N/mm2.