... .Material: stainless 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, HDG.Size: M6-M60, 1/4”-2.1/2”Length: 6 ... and we look forward to the future with you. 4.8, 5.6, 5.8, 6.8, 8 ...