Trapezoidal HSS Taps
Trapezoidal screw threads were devised to allow rotary and transversing motion on machines; and are also used in jacks, valves, presses and other mechanisms where heavy loads are encountered. The trapezoidal thread is characterized by a 30° included angle. Trapezoidal taps typically require specialized engineering and design due to the nature and severity of cut required in producing trapezoidal threads.