Metal threaded rod 1.High quality raw material 2.Different size can be selected 3.Fast ... .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 ...