MATERIAL : STEEL FASTENERSGRADE : A2-50 , A2-70 , A2-80 , A4-50 , A4-70 , A4-80 , 200 SERIESSTANDARD : METRIC DIN 975 INCHES ANSI B18.2.1SIZE IN DIA : METRIC M3 M100INCHES 316" 4"THREADED ROD : METRIC 50 MM TO 3 MTRINCHES 12" TO 12 FEETMANUFACTURING BY : COLD FORMING