Strong stability: The screws with washers have a unique flange design. The built-in flange replaces the separate washers, which not only increases the friction between the screws and the contact surface, but also distributes the pressure, so that the screws remain stable for a long time after installation. Super anti-loosening: The design of the flat screws with flange provides greater locking force and prevents the screw from loosening due to vibrations. The flange design also increases the contact area between the screw and the contact surface, which further improves the anti-loosening performance. High-quality materials: The flat screws with Torx are made of stainless steel, which has excellent tensile strength and shear strength. This material not only ensures the stability of the screws under heavy loads, but also their performance in extreme environments. Wide range of applications: The countersunk flat screws are very suitable for applications in areas that require high reliability and long service life, such as the automotive industry, aerospace engineering, mechanical engineering, precision instruments, model building, etc. Machine screws with plates can effectively prevent the screws from loosening and ensure a long-lasting fastening effect. Product parameters: Size: M6 x 20 mm; Quantity: 20 pieces; Material: 304 stainless steel (A2).