DIN 69063-5
DIN 69063-5 Machine tools - Tool receiver for hollow taper shanks - Part 5: For type E according to DIN 69893-5; connecting dimensions
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2006
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 11/01/2006