... steel, carbon steel, iron. 2.Grade: 4.8, 5.6, 5.8, 6.8, 8.8, 10.9. 3.Finished: plain, zinc ... Material: stainless steel, carbon steel, iron.Grade: 4.8, 5.6, 5.8, 6.8, 8.8, 10.9.Finished: plain, zinc plated ... : M6-M60, 1/4”-2.1/2”Length: 6-300mm bolt and nutMaterialstainless steelcarbon steeironGrade4.85.88.810.9DiameterM3 ... forward to the future with you. 4.8, 5.6, 5.8, 6.8, 8.8, 10.9 bolt and nut