Product Name: Self-Tapping Photo Hanging Wood L Hook Screw Model NO.: SW-ST019 Grade: 4.8 Standard: DIN, GB, BSW Head Style: Round Connection: Common Bolt Groove: Hexagon Type: Round Head Material: Carbon Steel Production Time: 30 Days Trademark: OEM Transport Package: Carton + Pallet Specification: all the sizes Origin: China Product Description Factory price zinc plated L type self tapping screw wood hook screwMainly used for hanging pictures or do the cabinet,it is usually the head of the fingertips, the coarse teeth, the hard wood screws, aluminum alloy and plastic.It can be in the material that is consolidated, rely on its own thread, will be consolidated body "attack - drill, squeeze, pressure" the corresponding thread, make the close cooperate with each other.