1) Standard: DIN571, ANSI/ASME B18.2.1, IFI C-18 2) Size: M3-M16, 2#-14# 3) Material: carbon steel 4) Surface: plain, black, zinc, H.D.G., nickel, phosphate 5) Inner packing: In bulk or as customers' requests 6) Outer packing: Carton or as customers' requests 7) Payment: T/T or L/C at sight 8) Delivery: By sea We also produce bolts, nuts, thread rods, auto fasteners and many non-standard fasteners for customers to choose. If you are interested in any size of fasteners, please feel free to contact with me. Then I will give you more information of our products, and we can chat for more details.