Historical
SS-ISO 26623-1:2014
Polygonal taper interface with flange contact surface - Part 1: Dimensions and designation of shanks (ISO 26623-1:2014, IDT) (Swedish Standard)
ISO 26623-1:2014 specifies dimensions for polygonal taper interfaces with flange contact surface: polygon-shanks for automatic and manual tool exchange to be applied on machine tools (e. g. turning machines, drilling machines, milling machines, and turn/milling centres, as well as grinding machines). A range of shank sizes is specified.
Swedish Standards Institute [sis]