screw and washers assembled Material:carbon steel,stainless steel,brass Plating: ... ,Pan washer,Flange,Square,T head,etc.3.Drive of screw :Torx/6-Lobe Socket,Hex Socket,Phillis,Pozi,Combi,Slot ... packing: 15-18Kg per Carbon, 60 Carbons for a Pallet. screw and washers assembled