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. [joints and joint components]
7. joints (connections)
8. [joints by material joined]
9. metal joints
10. metal seams

Anotations

Scope note:

Sheet metal seams formed by slipping a cap strip, which is a narrow metal strip that has had long edges turned, over the turned edges of the two metal pieces to be joined, to form a lock. An example of use is in assembling cross seams of ducts.