270 Pcs Self Drilling Screws, M4.2 Galvanized Steel Flat Head Tapping Screws Fasten Assortment Kit, Used For Thin Metal, Wood, Plastic, Etc. (13/16/19/25/32/38 /50mm)

【High-Quality Materials】: Self drilling screws are made of high-quality carbon steel galvanized. While maintaining high strength, it improves corrosion resistance and rust prevention performance. It can be used for a long time even if exposed to a humid environment or paint. 【Product Features】: The tail of the screw is pointed, which can be drilled, tapped, and locked directly on the base material, which greatly saves construction time. Compared with ordinary screws, its toughness and holding force are high, and it is not easy to loosen. Punching and tapping are completed at one time, deep thread locking, flat cross groove design, simple and convenient operation, smooth and beautiful surface after installation; 【Set Includes】: The set has 270 self-drilling screws, with the following 7 specifications, 70pcs M4.2*13mm, 60pcs M4.2*16mm, 30pcs M4.2*19mm, 30pcs M4.2*25mm, 30pcs M4.2 *32mm, 30pcs M4.2*38mm, 20pcs M4.2*50mm, various specifications to meet various needs; 【Scope Of Application】: self-drilling screws, the use of off-round rotating objects and frictional mechanical products to gradually tighten the tools, which can be used to fix color steel tiles, simple building thin plates, such as the connection between color steel plates, color steel plates and purlins , Wall and beam connection, etc., are also used in a large number of decoration, construction, residential and other places; 【Storage And Service】: Storage is convenient, all products are stored in a plastic packaging box to prevent children from swallowing and scratching by mistake. It is also convenient for your access. Hope you will like the products we provide,If you have any questions, please contact us in time, we will provide you with services as soon as possible.