Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Components (hierarchy name)
4. components (objects parts)
5. [components by general context]
6. hardware (components)
7. [hardware by form]
8. finish hardware (hardware)
9. [securing devices and securing device components]
10. securing devices
11. latches
12. [latches by form]

Anotations

Scope note:

Unencased surface-mounted latches consisting of a bar pivoted to a plate and engaging with a hook on the jamb, the bar being operated by a thumb piece on the outside of the door and by a lift handle on the inside.