Thread Minor Diameter Calculator
Thread Minor Diameter Calculator . Determine thread dimensions such as major diameter, minor diameter, pitch diameter, and dozens of other variables that specify a screw thread. All units are in inches. HD knowledge about CNC programming from www.hdknowledge.com When the diameter smaller than 1/4”, the value is indicated by a number, like #1 or no.1. Screw thread designations, minor diameter, major diameter, pitch diameter; 20 threads per inch on a 1/4 diameter screw is considered coarse: