... 1) High strengthen: grade4.8, 8.8, 10.9 and 12.92) Material: mild steel, 45# steel,40Cr steel ... ,35CrMo steel.3) Thread pitch: 1.5mm,2.0mm.4) Finishing: bake paint, oxide paint, zinc plated, phosphate ... Inner packing:Each U bolt with one plastic bag and 4-5pcs in one carton box Outer packing:Standard ... can produce U bolts as per your engineering drawing and/or samples.2. We can supply package by your ...