250 pcs. M4.8x13 Carbon Steel Round Head Self Drilling Screw White Zinc Plated Drill Screws Feature:1. Screw type: these screws are self-drilling round head screws, with standard size 4.8x1 3mm/0.2x0.5in, total 250pcs one package for use2. Fully Threaded: These screws are fully threaded for excellent retention and greatly secures the material on aluminum or metal plates3. Corrosion-resistant housing: These screws are galvanized, providing excellent rust-resistant and corrosion-resistant housing4. Carbon steel white zinc material: these round self drilling screws are made of carbon steel white zinc, which has a long-term durability5. High Stability: These screws are strong and durable, with stable performance, can be used with screw gunsSpecification:Item Type: Self Drilling Screw Material: Carbon Steel White ZincExterior Treatment: GalvanizedSize: Approx.4.8x13mm/0.2x0.5inPacking List:250 x Self Drilling ScrewNote:Pay attention to the correct operation.