High quality Hex nut Product:1. with ISO9001:2008 certification.2. Description: Hex nuts DIN934 DIN5553. Size: M3~M90 4. Material: carbon steel or according to customer's requirement5. Standard: Din934, Din555,NE,NTE,NU,NTU 6. Grade: class 4.8~class 10 7. Finish: Plain, Zinc, Black, H.D.G, phosphating, Dacromet8. Packing: 25kgs/carton, 900kgs/pallet; 20 FT FCL: 20~24 tons