Abstract: A backing member for a pronged garment fastener comprises a sheet-metal disc of spherically curved shallow dished configuration having a convex exterior surface and a concave interior surface. Integral tongue elements extend radially inwards from the periphery and lie in closely adjacent substantially abutting confronting relation with said concave interior surface within the concavity recess. The tongue elements have apertures which register with the prongs of the fastener and, adjacent said apertures, longitudinal groove or channel formations which extend radially inwards and which co-operate with the opposed concave interior surface to form pockets adapted to receive and accommodate the individual bent-over end portions of the prongs which are passed through said apertures and clenched against the concave interior surface.