... detail:Export Quality PackagingDelivery Detail :FOB NINGBOSpecifications(1). Product: Carbon Steel Nut(2). Standard: ISO4032(3). Grade:8(4). ... Size: M72(5). Material: Carbon Steel(6). Surface treatment: Black oxidePhotos for detailPhotos for PackingCertificationRegarding ... of NutSquare,Hex,Flange,Hex socket,T-type,Coupling,wheel ,acorn,tapper,and so onRegarding to Washers Type of ...