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The ISO designation system for toolholders for turning applications

For turning toolholders, as for indexable inserts, there is a similar ISO designation system.

The system is designed so that each important feature and dimension of the toolholder is shown using a code system. This becomes the name of the toolholder.

This system has several advantages:

• Unique naming of a toolholder (supplier independent)
• All important features and dimensions are clearly stated in the name
• Some code positions relate to the insert that can be used in the toolholder

It's important to remember that the ISO designation system is not a system that standardizes the quality of the toolholders.

Here is an example for external turning toolholders (metric)

ISO standards Turning

Here is an example for internal turning toolholders (metric)