u bolt 1) High Quality :grade 10.9, and 12.9 2) Finishing:Bake Paint ,zinc plated, phosphate,black oxide u bolts,u bolts with nuts,u clamps Specification:1) Grade: Ordinary standard 10.9(Or as required) (Tensile strength=1040N/mm.square)2) Material: Mild steel, (45#)ASTM 1045 steel,(40CR)ASTM 5140 steel3) Finishing: Bake Paint, Black Oxide , Zinc Plated, Phosphate, Electrophoresis,Dacromet,ect.4) ...