... ANSI/ASME,ISO,GB 4.Finish:Plain,Chrome or zinc plated NameCross Recessed Countersunk Flat Head Screws MaterialLow carbon steel,Stainless SteelDiameter3 ... zinc plated,plain,HDG,Dacromet,and so onHeadHex washer head,Phillps flat head,Phillips pan headPackingless than 25kgs bulk into carton, then ... . carriages, containers, shipbuilding, refrigeration equipments Cross Recessed Countersunk Flat Head Screws