... .Finish:Plain,Chrome or zinc plated NameCross Recessed Countersunk Flat Head Screws MaterialLow carbon steel,Stainless SteelDiameter3.5-6 ... ,plain,HDG,Dacromet,and so onHeadHex washer head,Phillps flat head,Phillips pan headPackingless than 25kgs bulk into carton, then ... installationAutomobile. carriages, containers, shipbuilding, refrigeration equipments Cross Recessed Countersunk Flat Head Screws