DIN 69882-7
DIN 69882-7 Tool holders with hollow taper shanks according to DIN 69893-1 - Part 7: Type F, expansion clamping chuck - Dimensions
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2005
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 06/01/2005