Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by specific context]
6. information form components
7. gathered matter components
8. [bindings and binding components]
9. bindings (gathered matter components)
10. [bindings by structure]
11. mechanical bindings (components)

Anotations

Scope note:

Bindings in which a closely-spaced number of holes are drilled or punched through the leaves near the binding edge to take a spiral-twisted wire or plastic coil which is drawn through the holes to secure the leaves.