Deformed nail corrector

Patent Granted Resilient metal piece (10) of cold rolled sheet with its rolling direction aligned along the longitudinal direction is procured, and wrought into correcting plate (16) with its nail width direction agreeing with the longitudinal direction of the resilient metal piece (10) and a configuration with multiple tongue pieces (11) projecting from the nailtip-side terminal edge of the correcting plate (16). Hook nail (17) with a double structure of folded part (18) and bent part (19) is formed by folding and bending of the tongue pieces (11).