ISO 10889-5:2016 specifies dimensions, designations and complementary technical delivery conditions for tool holders with more than one rectangular seat of types D1 and D2 with cylindrical shank in accordance with ISO 10889‑1.

ISO 10889-5:2016 is applicable to tool holders with cylindrical shank for machine tools with non-rotating tools, preferably for turning machines.

For non-standardized tool holders with more than one rectangular seat, such as tool holders as shown in Figures 1 to 3, it is advisable to apply the corresponding specifications of this part of ISO 10889.