U bolt 1.Grade: from 4.8 to 12.9 ; 2.Finish: Plain, ZP,YZP,BZP, BO, H.D.G.,Dacromet and etc. 3 ... .Material : carbon steel U bolt 1. Thread:M, UNC, UNF,2. Grade ... , Bag, Pallet or according to your requirement.For non-standard U bolt,your drawing or samples will be available for us.Contact ...