Metal self-aligning demountable snap fasteners consisting of press fasteners and press studs for use in attaching panels, hatches, floors and furniture in boats, motor vehicles, trains, aircraft and buildings; Metal clamp-type fasteners for holding in place curtains, tarps, canvas, cloth and film covering material; Magnetic alloys; Metal suction cups; Buckles of common metal; Rivets, cramps and nails of metal; Fittings of metal for furniture