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