... 0.5-1mm.Custom made products are also welcomed. Slotted Screws for Camera material C12L14,Brass, C1006-C1022,sus200,sus201, ... ,America A286,35#,40CR,35CRMO,SCM435,and etc. Slotted Camera Screws Surface treatment Plain, Black Oxide,nickel plated, Chromated, passivated, ... equipment:Hardness test, torque test, salt spary endurance test, mechanical sizes test, ROHS report Mill test certification and etc as ...