[Materials] SS400, SWCH equivalent, SUS304 equivalent. [Surface treatment] Trivalent chromate plating [Nominal Thread (M)] 2/2.5/2.6/3/4/5/6/8/10/12/16/20/24. [Pitch] 0.4/0.45/0.5/0.7/0.8/1/1.25/1.5/1.75/2/2.5/3