... GR9 2.Standards:DIN7984,DIN6912,DIN84,DIN85,DIN7048 Specifications titanium screw with high quality and best priceMaterial:GR1, ... , nuts, shafts , shaft liners, flange, gear wheel, sprocket wheel.Titanium and Titanium alloy specifications:1.Common Grounda, Bolt sizes:M3 ... GR5,GR7,GR92.Difference:a, Titanium for the chemical aspects,PCBequipment,electrodes.b, Titanium alloy used in Bicycle,Motorcycles, ...