DIN 4003-82
DIN 4003-82 Concept for the design of 3D models based on properties according to DIN 4000 - Part 82: End mills with non-indexable cutting edges
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 08/01/2013
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 08/01/2013