Features: 1Various types of screws and nuts a wide range of applications convenient and fast plastic boxed. 2Made of high quality alloy steel material provides strength and offers good corrosion resistance in many environments. 3Ideal for use in confined areas where the head needs to be flush or below the surface. 4Convenient to use and with good performance fixing component industrial and construction fasteners. 5Used widely in the home and office appliance communication equipment ship assembly and other machinery industry. Specification: Item Type: Hex Socket ScrewsMaterial: Alloy Steel Color: Black Product Model: M4x6mm M4x8mm M4x10mm M4x12mm M4x16mm M4x20mm M4 nutM4 Screw Size: Approx.6mm / 0.24in 8mm / 0.31in 10mm / 0.39in 12mm / 0.47in 16mm / 0.63in 20mm / 0.79inWeight: Approx.262g/9.2oz Package List: 25 x M4x6mm25 x M4x8mm25 x M4x10mm25 x M4x12mm25 x M4x16mm25 x M4x20mm100 x M4 Nut1 x Storage Box Note: 1. Please allow 12mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.