1) Standards: DIN601, DIN931, DIN960; ISO4014; ANSI/ASME B18.2.1 A6 2) Grade: 4.8, 6.8, 8.8, 10.9 3) Material: Carbon Steel 4) Diameter: M6-M30 5) Finished: plain, black, zinc, H.D.G, nickel, phosphate, etc. 6) Packing: G.W.: 25Kgs/Carton in Wooden Package or Small Mail Box According to Customer Inquire 7) Payment: T/T or L/C At sight We also produce carriage bolts, nuts and many non-standard fasteners according to customers' inquiry. If you are interested in any size of our products, please feel free to contact with me. Then I will give you more information of our products, and we can chat for more details.