Screw and method for manufacturing the same

摘要

A method for manufacturing a screw includes the following steps of: providing a screw body (3) having an outer surface and including a head portion (31) and a shank portion (32) that extends from the head portion (31); immersing the screw body (3) into a solution composed of diethylene glycol monobutyl ether acetate, water borne organic-inorganic copolymer resin and water; and removing the screw body (3) from the solution, followed by baking the screw so as to form a transparent layer (41) on the screw body (3).