... Material: copper, stainless steel, carbon steel, alloy steel, aluminum etc ISO9001 2008 self clinching hex nut 1. Material: copper, stainless steel, carbon steel, aluminum etc2 ... team makes high quality; own test equipments and 100% inspection prior to each shipment Packing methodsPly wood case/Steel pallet ... on the demand quantity. If you have any design of the metal parts, please inform us, we can ...