IMPA SCREW THREAD RULES DIN

The IMPA SCREW THREAD RULES DIN are a set of guidelines for the creation of screw threads. They are designed to ensure the accuracy and consistency of screw threads, and to allow for their interchangeability. The rules cover both metric and imperial screw threads, and specify the diameters, pitches, and tolerances for each. They also include information on the creation of threads with special properties, such as those with left-handed threads or those with tapered threads.