Standard:DIN Product name:eworldtrade china m3 titanium nuts / bolts / screws / fasteners Surface treatment:Plain, ZincPlated(Clear/Blue/Yellow/Black), black oxide, H.D.G, standard:DIN & ANSI & JIS & IFI Material:carbon steel, alloy steel, stainless steel Grade:Class 4,5,8,10,12;Grade 2 ,Grade 5,Grade 8:304,316 Type:nut Size:M3-M72(3/16''- 4'') Finish:Customized Request Certificate:ISO9001: 2008 Application::Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy Show More