DIN 6350-2
DIN 6350-2 Lathe chucks, hand-operated - Centric clamp - Part 2: Mounting recess with 1:4 taper
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2010
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 05/01/2010