... 0.5-1mm.Custom made products are also welcomed. Slotted Screws for Camera material C12L14,Brass, C1006-C1022, ... A286,35#,40CR,35CRMO,SCM435,and etc. Slotted Camera Screws Surface treatment Plain, Black Oxide,nickel plated, Chromated, passivated, ... zinc plating, phosphated, Dacromet,copper plating, gold plating and etc as per your need. Slotted ...