Hex flange nuts 1.Material:carbon steel 2.Finished:self color,black,zinc 3.Size could be customized 4.Output:1000-1300tons/m Item NameHex flange nuts Material carbon steel Finished self color,black,zinc Size Size could be customized Standard DIN,ANSI,ISO,BS Grade Grade4.8/6.8/8.8/10.8,Grade2/5 Package in bulk,gunny-bag,carton box Output 1000-1300tons/month Hex Flange Nut