ISO 10889-6:2016 specifies dimensions, designations, and complementary technical delivery conditions for tool holders with cylindrical seat of types E1 to E4 with a mounting system cylindrical shank in accordance with ISO 10889‑1.

ISO 10889 is applicable to tool holders with cylindrical shank for machine tools with non-rotating tools, preferably for turning machines.

For non-standardized tool holders, such as tool holders with a cylindrical seat as shown in Figures 1 to 4, it is advisable to apply the corresponding specifications of this part of ISO 10889.