250 pcs. Round Head Washer Bolt Zinc Plated Carbon Steel Self Drilling Bolts M4.8x50mm Feature:1. Specifications: Cross head screws, the screw specification is M4.8 x 50mm, with standard size, stable and tight in connection.2. Easy tightening: the cross-section of the screw is smooth and burr-free, the thread is clean and neat without gaps, which is conducive to tightening.3. Carbon steel: these bolts use excellent carbon steel material, with galvanized treatment, which has good strength and corrosion resistance.4. Cross pattern: standard cross groove design, which has shiny and complete thread, uniform force, not easy to slip when tightening.5. Wide Application: Including 250pcs drill screws, sufficient quantity, widely used in furniture repair, industrial fastening and DIY, etc. Specification:Item Type: Round Head BoltMaterial: Carbon SteelSurface Treatment: GalvanizedSpecification: M4.8 x 50mm Packing List:250 x ScrewsNote:Pay attention to the correct operation