... Pan head, Countersunk head, Bugle head, Oval head, Hex flange head, Button head, Triangular head , Round head, ... socket head , etc.3.Drive type: Slotted, Phillips, Hex Socket, Torx, ” type, One Way etc.MaterialCarbon steel ... and trade integrationMain ProductsWood Screw, Drywall Screw, Chipboard Screw, Machine Screw, Deck Screw, Self Tapping Screw, Self Drilling Screw etc.Producing EquipmentScrew ...