Hex head bolt 1.Material:middle carbon steel,alloy steel 2.Size:M6x10 to M36x300 3.Grade:4.8,6.8,8.8,10.9 Hex head bolt1.Material:middle carbon steel,alloy steel2.Size:M6x10 to M36x3003.Grade:4.8,6.8,8.8,10.94.Finish:zinc plated,blackoxided,hot dip galvanizedYour detail inquiry is highly appreciated.Thanks. Hex head bolt