Nylon Insert Lock Nuts 1.Materials:Carbon Steel 2.Diameter:M3~M36 3.Finish:Zinc 4.Standard:DIN985 Nylon Insert Lock NutsHigh quality and Best price1.Materials:Carbon Steel2.Diameter:M2~M643.Standard:DIN4394.Packing:Bulk or Small Box,According to customer requirement5.Surface Treatment :Zinc,Black Phosphate,Grey,Nickel,Etc DIN985 Nylon Insert Lock Nuts