... machine thread, triangle thread, metric thread, tapping thread, drilling thread, half thread, full thread etc.2.Head type: Hexagon head, Mushroom head, Pan head, Countersunk head ... featuresA company with industry and trade integrationMain ProductsWood Screw, Drywall Screw, Chipboard Screw, Machine Screw, ... production of CNC/AUTO lathe, springs, shafts, screws, stamping parts and other metal parts. Our ...