... standard) Diameter 2mm-80mm Length The longest 8000mm Screw pitch(lead) Up to 50mm Material SUS304,SUS303,Cr13,2Cr13,3Cr13,40Cr ... widely used in tool, spinning, medical equipment, exercises machines, car and other industry. pls enquiry us. Quality Professional manufacturing, high-precision ... for good survice,offer us your drawings for better quotation and other details. trapezoidal lead screw and Nuts