1.Material:carbon steel,stainless steel 2.Finish:zinc,black 3.Grade:8.8,10.9,12.9 [ Product Description]Hex bolt PictureNameHex Bolt ... , mild steel, stainless steelFinishplain,black, zinc plated, hot-dip zinc, hot-dip galvanizing, black, dacrometGrade4.8,6.8,8.8,10.8,12.9SizeM3-M80ThreadFull thread,non ...