Preferred label: 

Fittings, usually in metal, mounted on the surface of a board, either under or over the covering material, and fitted with a slot, hole or pin in or on to which a clasp or ring can be secured. Pins are also found on their own as edge pins and side pins, which are not part of a larger fitting.

Alternative label: 
catch plate
Broader concept: 
Broader partitive concept: 
Top concept: