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

Narrower term/s

• flange dovetail seams
• plain dovetail seams
• beaded dovetail seams

Anotations

Scope note:

In sheet metal work, various types of seams where tabs are cut from the sheet of metal and folded or bent over the collar or another sheet to form a seam. Dovetail seams are typically used on round or elliptical pipe in joining collars to flange; rarely used on rectangular duct.