Metal threaded rod 1.High quality raw material 2.Different size can be selected 3.Fast ... 2.Class:Grade4.8,5.8,8.8 ,10.9,12.9 3.Surface: Plain,Black,Zinc plated,HDG 4.Length ... :DIN9762.Class: Grade4.8,5.8,8.8 ,10.9,12.9,B73.Surface Treatment: Zinc Plated (CR3, CR6), Galvanized, Plain ... , HDG, Black 4.Length:100mm-5000mm5.Material: Mild Carbon Steel, High Carbon Steel(35K,45K,40CR,B7)6.Size:M3-M527 ...