... detail:Export Quality PackagingDelivery Detail :FOB NINGBOSpecifications(1). Product: Carbon Steel Nut(2). Standard: ISO4032(3). Grade:8(4). Size: M72(5). ... 25Cr2MoVA, 35VB, 40CrNiMo,Stainless steel and so onSizeM6-M42 LengthM16-300Type of headSquare,Hex,Flange,Hex socket,T-Head and other ... or your sampleRegarding to Nuts Type of NutSquare,Hex,Flange,Hex socket,T-type,Coupling,wheel ,acorn,tapper,and ...