Hex nut,nut,thin nut : 1, Standard also available: DIN439,DIN936,IFI HEX D-6, D12,ISO; 2, Sizes:M6 up to M56. All kinds of Hex Thin Nut:1, Over 10years manufacturing experience,2, Taiwan imported new machines and processing,3, ISO management;4, Exporting market: worldwide.5, Standard also available: DIN439,DIN936,IFI HEX D-6, D12,ISO6, Sizes:M6 up to M56;7, Material: carbon steel