1.Name:Hex flange metal lock nut 2.Meterial:Carbon steel 3.Finish:Zinc plated(Cr,3+) 4.Size:1/4"~3-1/4";M3~M80 1.What’s the specification of our Hex Flange metal Lock Nut? 1.NameCarbon steel zinc plated hex flange metal lock nut2.standardASTM,DIN,ISO,BS,AS,JIS,etc3.MaterialCarbon Steel4.GradeDIN,ISO:4,5,6,8,10etc;SAE:A,2,5,8;etc5.FinishZinc plated(Cr,3+)6.Size 1/4"~3-1/4";M3~M807.Supply ...