Abstract: An object of the present invention is to provide a universal fixing metal fitting 1 for an operating table capable of being easily attached and detached, capable of enabling simultaneous firm fixing between the fixing metal fitting, an appliance to be fixed, and an accessory attachment table by performing fastening one time regardless of the existence/nonexistence of a sheet or the like, capable of ensuring the same firm fixing even when the shape of the accessory attachment table is changed and capable of fixing no matter what the shape of the appliance to be fixed is.