din975 threaded rods material:stainless steel,carbon steel... grade:4.8/8.8/9.8/10.9/12.9 ... finish:zp,hdg,plain,black... DIN9751.Standard:DIN9752.Metail:Carbon steel,stainless steel.brass...3.Size:all size4.Standards:DIN 9755.Surface:plain,zinc plated,black oxide,hot dip galv.etc.Trade Market:United States, Saudi Arabia, Europe,South Korea,Southeast Asia ,etc. din975 threaded rods