... camera tripod screws material: steel , stainless steel camera screws size: M3-M6 D=2-4mm camera screw head shape:with a D ring camera ... tripod screws :A.Product specifications Camera Screws Size Norminal diameter: ... ,America A286,35#,40CR,35CRMO,SCM435,Brass,and etc. Camera ScrewSurface treatment Plain, Black Oxide,nickel plated, Chromated, ...