M4.2 flat head self-tapping screw set, 50 pieces, drill shank screw set (M4.250)

Features: 1. 100% brand new and high quality. 2. These self-drilling screws have sharp drill shanks, requiring no additional processing. 3. They can directly drill, tap, and lock into the material simultaneously, making them safe and easy to use, thus significantly saving construction time. 4. Compared to ordinary screws, they have high holding power and will not easily loosen over time. 5. Primarily used for fixing colored steel tiles in steel structures or for simple construction of thin sheet metal. Specifications: Features: 100% brand new and high quality. These self-drilling screws have sharp drill shanks, requiring no additional processing. They can directly drill, tap, and lock into the material simultaneously, making them safe and easy to use, thus significantly saving construction time. Compared to ordinary screws, they have high holding power and will not easily loosen over time. Primarily used for fastening colored steel roofing sheets to a steel structure, or for simple construction of thin sheet metal. These screws cannot be used for bonding metals. Specifications: Material: Zinc-plated iron Head type: Flat (countersunk) Size: M4.2*13, M4.2*16, M4.2*19, M4.2*25, M4.2*32, M4.2*38, M4.2*50 (optional) Quantity: 50 pieces Weight: 46g~161g / 1.6oz ~ 5.7oz (approx.) Package list: 50 * Screws