We can supply from M2.0 to M64, and the material in stainless steel, brass Hex NutMaterial:Carbon steel,stainless steel,Grade:4.8,6.8. 8,10 Size:M3 to M30 Surface:Zinc plated Plain,Black,YzpHex nut DIN934Material:Carbon steel,stainless steel,Grade:4.8,6.8. 8,10Size:M3 to M30Surface:Zinc plated Plain,Black,YzpPacking:25KG for a carton or 8 box in a carton then in Standard pallet Hex Nut