U-bolt with nut 1.Material:45#,40Cr 2.Strength: 8 ... .8,10.9,12.9-grade 3.Finish: black, electronic galvanized etc. U ... -bolt with nut/auto part1.Material:45#,40Cr2.Strength: 8.8 ... : black, electronic galvanized, hot-dipped galvanized etc.4.U-bolt size(diameter,width,length): according to customers' requirement ...