HT high-speed steel straight groove thread tapping is widely used for general thread male tapping machining. The standard straight groove wire tapping is the most primitive style of wire tapping. The chips of the tapping teeth are finely divided and generally divided into three types: first tapping (9 teeth), middle tapping (5 teeth), and upper tapping (1.5 teeth); The HT group includes three wire taps with different cutting lengths: the first tap, the second tap, and the third tap. HT is usually used individually, but sometimes it is also used in sets. Electroplating with increased precision P3 and P4 wire tapping, suitable for electroplating screws.
·HT screw tapping accuracy grade: YAMAWA P grade
·Screw tapping material: HSS-E
·Number of teeth in the cutting edge: first attack [9 teeth]/second attack [5 teeth]/third attack [1.5 teeth]
·Surface treatment: None
·Suitable for cutting materials: carbon steel, alloy steel, copper, aluminum, zinc and other light alloys with tensile strength below 850N/mm2.