... rod 1.standard:DIN,ANSI,BAW,GB 2.material:carbon steel,stainless steel 3.size:M3-M4,1M-4M 4.surface:zinc ... can offer all kinds of threaded rods.Material: low carbon steel, mild carbon steelStandards: ISO, DIN 975, ANSI, JIS, GB, BS ... plated, blue-white zinc plated, yellow zinc plated, hot dipped galvanization, black steel threaded rod