... .offer a variety of materials, types, standards and grades of nuts for your choice 2.DIN 934, BS1083, ISO4032,IFI D ... -5, etc DIN555 Hex Nuts Materials that we can produce:Carbon Steel, Stainless Steel, Copper ... M300.12250.1124.5 M360.07260.0625.5 DIN555 Hex Nuts