... half thread, full thread etc.2.Head type: Hexagon head, Mushroom head, Pan head, Countersunk head, ... , Round head, Ball head , Spherical Cheese Head, Hexagon socket head , etc.3.Drive type: Slotted, Phillips, ... trade integrationMain ProductsWood Screw, Drywall Screw, Chipboard Screw, Machine Screw, Deck Screw, Self Tapping Screw, Self Drilling Screw etc.Producing EquipmentScrew machine Hexing/SX & ...