1.Material: 40Cr, 45# Steel, 35CrMo steel 2.Finished: Plating,Phosphating,Oxide Painting 3. ... nut with different styles and sizes.1>.Material: 40Cr, 45# Steel, 35CrMo steel2>.Surface: Z.P. Black, Hot Dip, Plating ... your choice6>.U-Bolt Type: round, round flat, half-round ,half-round flat, square, square flat7> Certificate: ISO9001:2000 ... kinds of bolts according to your requirements. Steel U-shaped Bolt