... :We produce nuts according to UIC, GOST, GB/TB, DIN, BS, AS, ASTM standard or other specifications required by customers,2:Grade ... could be ASTM Gr.1,Gr.2,2H ;BS 4,6,8,10 ... M48,4:Material: Carbon steel or stainless steel, Q195, Q235, 35#, 45#, 35CrMo, 42CrMo, 40Cr etc.5:Packed in Sacks, cartons ...