ISO/TS 13399-304:2016 specifies a concept for the design of tool items, limited to any kind of milling cutters with arbor hole and non-indexable cutting edges, together with the usage of the related properties and domains of values.

ISO/TS 13399-304:2016 specifies a common way of design simplified models that contain the following:

- definitions and identifications of the design features of milling cutters with arbor hole and non-indexable cutting edges, with an association to the used properties;

- definitions and identifications of the internal structure of the 3D model that represents the features and the properties of milling cutters with arbor hole and non-indexable cutting edges.

The following are outside the scope of this part of ISO/TS 13399:

- applications where these standard data may be stored or referenced;

- concept of 3D models for cutting tools;

- concept of 3D models for cutting items;

- concept of 3D models for other tool items not being described in the scope of this part of ISO/TS 13399;

- concept of 3D models for adaptive items;

- concept of 3D models for assembly items and auxiliary items.