... : machine thread, triangle thread, metric thread, tapping thread, drilling thread, half thread, full thread etc.2.Head type: ... Screw, Chipboard Screw, Machine Screw, Deck Screw, Self Tapping Screw, Self Drilling Screw etc.Producing EquipmentScrew machine Hexing/SX & H series ... in the production of CNC/AUTO lathe, springs, shafts, screws, stamping parts and other metal parts. Our main production ...