[emeritus]

I know them as Spire clips. Looks as if the clip clips on to a fairly thick item (wood) and the fixing screw, presumably a self tapper, passes through a bore in the wood. If you can't find a clip, you could fill the through hole with a styrene wood filler (plastic padding or ronson wood filler) and drill a hole slightly larger than the root of the screw and screw it in. If it is a machine screw, drill and tap as you would in soft metal.